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U of Michigan creates first Quantum Microchip

zigziggityzoo writes "According to this article, The University of Michigan has created the first Quantum Microchip, which could eventually lead to the first instance of Quantum Computing ever." The bad news? We won't be seeing any notebooks or handhelds with quantum chips in the near future.

321 comments

  1. Measurement by Bob+Gelumph · · Score: 4, Funny

    It is not a first post until someone reads it as a first post

    --
    I'm gonna need a spec.
    1. Re:Measurement by TheClam · · Score: 1

      Best first post ever.

      Unless it's a dupe, of course. :)

    2. Re:Measurement by Anonymous Coward · · Score: 0

      well this is a huge imporvement

    3. Re:Measurement by Anonymous Coward · · Score: 0

      Unfortunately, you measured the quality of the post, so we'll never know if it's a dupe or not.

    4. Re:Measurement by ichigo+2.0 · · Score: 1

      I think you mean it was a dupe until he measured it?

    5. Re:Measurement by Firehed · · Score: 1
      And this processors both will and will not be available in home computers twenty-four hours from now.

      ...or something like that. I need to brush up on my Quantum Existance. But I don't. Oh dear...

      --
      How are sites slashdotted when nobody reads TFAs?
    6. Re:Measurement by Lord+Bitman · · Score: 1

      if a really tiny tree falls in the woods and nobody is there to hear it..?

      --
      -- 'The' Lord and Master Bitman On High, Master Of All
  2. But will it run Linux? by Dragoonmac · · Score: 0

    I must say I'm intruiged by the potential of this new technology. I hope it moves quickly out into the public, (primarily because I don't like the sound of "128bit Archetecture")

    --
    Shots: A Populist Parable
    1. Re:But will it run Linux? by merreborn · · Score: 1

      Keep in mind a 64 bit processor can address 17 billion gig of ram. You only really need 128 bit processing if you want to address more than that. 64 bit processing is only interesting because we've begun to hit the 4 gig/processor barrier. The wikipedia article on 128 bit processing points out that it's probably not efficient for a single 128 bit processor to have over 17 billion gig of ram to itself anyway -- it'd probably make far more sense to split the ram up between several 64 bit processors instead.

    2. Re:But will it run Linux? by Anonymous Coward · · Score: 1

      yes | no

    3. Re:But will it run Linux? by Anonymous Coward · · Score: 0

      "17 billion gig of ram should be enough for anyone"

    4. Re:But will it run Linux? by Craigj0 · · Score: 4, Interesting

      Actually for some people there are reasons to move beyond 64 bits besides address space. There are a lot of processors that are used in DSP that work on >64 bit intergers. However for a general purpose machine proccessing of large intergers is probably better off in specialised units like altivec.
      As a side note current 64 bit processors only actually can access about 40-45 bits of address space since all those extra pins cost money and are unlikely to be used.

    5. Re:But will it run Linux? by Charcharodon · · Score: 1
      Hahahaha, that's what they said about 64k, 8mb, 32mb, 64mn, 128mn, 256mn, 512mb, and so on.

      Who could possibly need 17 exabytes of ram?
      I'm pretty sure within five years someone will come up with a use for it.

      Just for the sake of novelty zetta (10x21) and yotta (10x24) come next.

    6. Re:But will it run Linux? by sigloiv · · Score: 2, Interesting

      His point is, even if you need over 17 GBs of RAM, it'd be far more efficient to just split up that RAM among multiple 64-bit processors. I mean, by the time we have 17 exabytes of RAM, they're will probably 1000 core 64-bit processors. ;)

      --
      Software is like sex. It's better when it's free. -Linus Torvalds
    7. Re:But will it run Linux? by joto · · Score: 2
      Keep in mind a 64 bit processor can address 17 billion gig of ram

      We have a name for this: 16 exabytes!

      The wikipedia article on 128 bit processing points out that it's probably not efficient for a single 128 bit processor to have over 17 billion gig of ram to itself anyway -- it'd probably make far more sense to split the ram up between several 64 bit processors instead.

      So how would you address ram on a different processor? Ok, this is so far into the future, that anyones guess is valid, but a 128 bit address space isn't too silly.

      Assuming we use some form of nano-storage with an atom per bit, 2^64 bytes needs storage space measured in cubic mm. 2^128 bytes needs storage space measured in cubic km.

      2^256 bytes needs storage space measured in cubic deci-parsecs. This is still conceivable for a science fiction scenario, and would be the preferred memory addressing size for a dyson-sphere (or cluster of dyson-spheres, with still a bit of room for virtual memory). A 512 bit address space starts to get pretty unrealistic though, at least if you need it for memory addressing reasons...

      But I digress. The point is that it's still very conceivable that future advances in nanotechnology will bring cheap nanoscale-memory, where a 64-bit address-space is still too small. A 128-bit address space ought to be enough for everybody though (at least on a conceivable time-scale).

    8. Re:But will it run Linux? by hedwards · · Score: 2, Funny

      Keep in mind a 64 bit processor can address 17 billion gig of ram. I think that should be "Gub." 1 billion bytes is a gigabyte, but 2^30 bytes is more properly referred to as a gubibyte; and last time I checked ram was measured in base 2 rather than the easier to remember SI units. If they choose to use the indeterminate spin as a "2" they may need to add a third prefix for base 3. He, He, He. This is still news for nerds, right?

    9. Re:But will it run Linux? by Rei · · Score: 1

      Do note that quantum computers are *not* general purpose computers. There are a small finite number of known algorithms that can be run on them. Hopefully this list will grow with time, but the concept of running, say, an OS on a quantum computer is just silly.

      Quantum chips may eventually be found in regular computers, but they will only be addressable for specific tasks. In a way, it's like an uberfast bios - you "flash" it with a valid "program" from a small list, and then it can run that specific program (amazingly fast).

      When I first read the article, I was thinking that it was going to be a Kane quantum computer because they mentioned a "chip" (Kane quantum computers are based on phosphorus ions on a silicon wafer). This looks instead like a trapped ion quantum computer. I thought that ion trap quantum computers tended to have problems with short decoherence times that led to needing enough error correction that you lose most of your qubits, making them less valuable as a computing device. Kane quantum computers have decoherence times, if wikipedia is correct, of around 1e19 seconds ;)

      --
      I just invaded Grammar Czechoslovakia and duped Grammar Neville Chamberlain; now it's on to Grammar Poland.
    10. Re:But will it run Linux? by thomasxstewart · · Score: 1

      Its' important concept to remember in "desktop" processor choices'. If you go 64 bit, iA64 or EMT64 are not same. Amd uses iA64 i stands for Intel, as it works as well as iA32 SO ITS BOTH 32 BIT & 64 BIT COMPATIBLE. However, iA64 is 48 bitwidth, while EMT64 is only 40 bitwidth & IS Intels "emulated" 64 bit processor ("EMULATED" simply means its not as much as iA64, yet runs same software as iA64 can. So AMD does more per clock with wider bitwidth, yet IBM, not to be outdone by just "anyone", is going to desktop standard that is even larger in bitwidth, it is rumoured to be 52? bitwidth. Why not 64 bitwidth, well, lots o' stuff has to be engineered first, one step at time, filling in how those bitwidths are used. By stepping up slowly most efficent useage of each bit is ensured (as well as being able to run 32 bit or 64 bit software with iA64), also "identifier" bits on both ends of each bit string take up remander of available space,units of 4 bitwidth are common end(s) identifier length, yet its too much in "unknown" zone to state exactly what IBM will do,just simple math says Intel 12bit bitwidth ends, AMD 8 bit biteidth bit ends, IBM 6 bit or 4 bit bitwidth ends.32 bit computing (iA32) uses 4 bit bitwidth ends.Signed:PHYSICIAN THOMAS STEWART VON DRASHEK M.D..

      --
      WINDOWS XP Service Pack -X- 396 mb. http://www.geocities.com/tsvondrashekmd/WASHINGTON .html
    11. Re:But will it run Linux? by thomasxstewart · · Score: 1

      Oppsie- Theres no such thing as 6 bit identifier bit in home desktop consumer computing (in general), they all come in units of 4 bit bitwidth ends units. I seldom think about this & I knew theres' some "trick" I was missing while I typed above post & there is. I.B.M. is using 8 bit bitwidth in opening statement, while only 4 bit bitwidth in closing statment. This is simple, as I stated iA32 uses only 4 bit bitwidth ends, so EMT64 nor iA64 can use 4 bit opening statement or your computer processor would turn itself into iA32 mode or at least be confused & start hacking bit strings up, it needs to know that software is compatable with processor internal archetecture, so bits going thru Intel have 3 4bit bitwidth statements in opening statement or it just won't fly, while AMD needs only 2 4 bit bitwidth in opening statement & same amount as opening is true for closing of each. While IBM uses same 2 4bit bitwidth opening statement as AMD, IBM knows that 1 4bit bitwidth is enough to close statement as thats all iA32 has. Once statement of closing goes thru comparrisson unit, string activeity stops until new opening statement arrives. It takes someone smarter than INTEL or AMD to figure that out? No, they all collude to do software in their own archetectured processor that meets reputation of each company. INTEL has faster clock rate and/or multiplier so althought bit string is smaller, more bits strings go thru per second than AMD. Intel uses extreme redundancy (parrallism)to hack thru almost any problem, so error due to high speed are just gone over again until correct output is realized. Amd crafts movement thru processor better, so that wider bitwidth allows same amount of bit processing per second to occur, yet at slower coreXmulitplier rate.That may be where AMD is weak, as gamecards at top end go twice as fast with 50% more transistors. More tranistors means more power software can express, yet at slower final rate per clock cycle. Can AMD "leap" to higher frequencies while doing more computing per string & increase tranistor count to tomorrows desktop demands, which simply means move workstation processing to desktop? Well, opteron is workstation processor & it has great reviews, yet if you look at actual clock speed, it is often quite low(due to large cache that means lots more tranistors to control multi tasking aspect of workstation)), so other factors, such as 65 nm (lets think how about "quntum" size tranistor gates,just for extremeness. Faster memory with on board controller may keep AMD on top for quite sometime. Until IBM gets "cell" processor into supercomputer market, then IBM may kick some real booty again in #1 position in consumer market. Ah SO SORRY ABOUT THAT 6 BIT basicly "ALBATROSSE" QUIP IN PREVIOUS POST (although who really knows),I BELIEVE THERE CAN BE NO SUCH THING IN iA32/iA64 nor EMT64, maybe in "albatrose" processsors like 586 that needs special encoding & that normally arn't even used except in most secure areas. Yet can do unusual decoding to move into & out of 486 to display for those terminals or internet online stuff that "banks" & other highly secured computers may have output use as some type of specialty identifier within "secured" level of archetecture,so its own software would be prevelant or only one, other common software or processor/translator outputs have to go to another processor or controller(or core?)that uses ethier 4 or 6 bit seperately within same enviorment of multi bit bitwidth multiples with each end same or unique.Signed:PHYSICIAN THOMAS STEWART VON DRASHEK M.D.

      --
      WINDOWS XP Service Pack -X- 396 mb. http://www.geocities.com/tsvondrashekmd/WASHINGTON .html
    12. Re:But will it run Linux? by master_p · · Score: 1

      an "64-bit processor" actually has integers larger than 64 bits. Even 32-bit processors have integers larger than 64 bits (e.g. multimedia instructions on Pentium chips). The "64" part refers to the memory addressing range, not to the integer range.

    13. Re:But will it run Linux? by Anonymous Coward · · Score: 0

      Did you forget your meds, or are you generally this manic and wrong?

      "Amd uses iA64"

      No. IA64 is the EPIC ISA for Intels Itanium line of processors and tottally different from the IA32 ISA used in current x86 processors. AMD developed the x86-64 ISA, which Intel have adopted under the name EMT64.

    14. Re:But will it run Linux? by marcosdumay · · Score: 1

      "A 128-bit address space ought to be enough for everybody though (at least on a conceivable time-scale)."

      I know you are serious, and have reasonable calculations, but I can't stop thinking about "64KB ought to be enough for everybody".

      Yet, I don't think we'll have kiloparsecs wide computers. But who knows if we'll be able to build some memmory smaller than atoms.

  3. Quantum? by MoxCamel · · Score: 4, Funny
    Oh boy.

    Mox

    1. Re:Quantum? by drinkypoo · · Score: 2, Funny

      Quantum? I hardly know 'em!

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    2. Re:Quantum? by POKETNRJSH · · Score: 1

      I want a quantum duck.

  4. Very nice, but imagine... by KanSer · · Score: 2, Funny

    Imagine a beowulf cluster of these bady boys!

    (Had to, sorry.)

    --
    • MOD PARENT UP by Anonymous Coward Wednesday April 20, @4:20
    1. Re:Very nice, but imagine... by vertinox · · Score: 1

      Imagine a beowulf cluster of these bady boys!

      Well. First you need a cluster of boxes and then a cluster of cats to put in those boxes...

      --
      "I am the king of the Romans, and am superior to rules of grammar!"
      -Sigismund, Holy Roman Emperor (1368-1437)
    2. Re:Very nice, but imagine... by Lord_Dweomer · · Score: 1
      " Imagine a beowulf cluster of these bady boys!"

      But if you imagined it...wouldn't that cause it to stop working?

      --
      Buy Steampunk Clothing Online!
    3. Re:Very nice, but imagine... by drgonzo59 · · Score: 1
      But seriously, that is what most people think - "Oh boy, I'll play Half Life x10 faster with one of them quantum chips"

      The only two known algorithms at this point that will benefit from the quantum speedup are factoring(Shor's Algorithm) and searching (Grover's Algorithm). Those are important and would greatly be useful but most other applications would not run any faster on a quantum chip than they do on a regular one from it (yet). In the future a quantum processor will probably become an add-on processor on large databases to speed up searches or to help crack public key encryption schemes.

  5. The Bad News by ackthpt · · Score: 5, Funny

    The bad news? We won't be seeing any notebooks or handhelds with quantum chips in the near future.

    Yeah, right. Let me introduce myself, my name is Richard and I am Vice Peon, Assistant to the High Junior Acolyte In Charge of Dustbins of the Holy Order of 8th Day Advanced Micro Devicers. Once we were few in numbers, our faith challenged at every turn by the Church of Intel. Scoffed at, most cruelly as rank copyists without an innovation to our name. After years of wandering the wilderness between iterations our faith was rewarded most gloriously! Speak not of Quantum Notbooks and Handhelds being a thing of dreams, for we know the mighty AMD will deliver.

    You'll see, you just watch! Ya betcha! Wrist devices, wearable quantum rings. Any second now. Yeah...

    --

    A feeling of having made the same mistake before: Deja Foobar
    1. Re:The Bad News by Anonymous Coward · · Score: 0

      Just imagine - you could wear a quantum ring that would shift the spectrum it reflects when your mood changes!

    2. Re:The Bad News by 0mni · · Score: 1

      AMD will deliver but not in the near future like the poster states. Quantum home computing is not going to be at any sort of a place to be worthwhile in the near future. There simply isnt a large enough market for such a thing at the moment, not to mention the amount of development time a completely new form of computing like this will take before it is ready for mainstream integration. But don't forget near future for computing is a lot closer than near future for something like biotech, we could be looking at 10-15 years before mainstream desktop implementation (if something better for desktop doesnt come along), I wouldn't exactly call this near future for computing, but to each their own.

    3. Re:The Bad News by DeathFromSomewhere · · Score: 1

      wearable quantum rings

      Oh, come on. I'm sure it's bigger then that.

      --
      -1 overrated isn't the same thing as "I disagree".
    4. Re:The Bad News by Anonymous Coward · · Score: 0

      more bad news

      sir, we have a problem
      what is it accolyte?
      one of the guys in the lab has a cold and sneezed on the quantum chip
      eeewww!! what is the damage
      we dont know, it triggered a black hole and swallowed half of the lab!
      good quantum lord! how many casualties, just the sneezing guy, everyone else ran away on time, his arm is still hanging from the quantum reversor emergency lever (the thing that collapses black holes from happening, you know, a useful device in any black hole prone environment).

      how sad...

    5. Re:The Bad News by ackthpt · · Score: 1
      Just imagine - you could wear a quantum ring that would shift the spectrum it reflects when your mood changes!

      Yes and the proto type will be called: The One Ring.

      that acolyte sauron, he sure is in a rotten mood...

      --

      A feeling of having made the same mistake before: Deja Foobar
    6. Re:The Bad News by pilkul · · Score: 1

      Quantum algorithms are so hard to write that the main part of computers will always be conventional; at best we'll have a "quantum coprocessor" to perform certain tasks that quantum computers are very fast at. I wouldn't be surprised if quantum computing never made it into consumer/business stuff and only remained in supercomputer land.

    7. Re:The Bad News by Guppy06 · · Score: 2

      "AMD will deliver but not in the near future like the poster states."

      Perhaps, but rest assured that, when AMD does deliver, the damned thing will be backwards compatible without software emulation.

    8. Re:The Bad News by bipolarpinguino · · Score: 1

      And noone will ever need more than 64KB of memory... Eventually some crazy man will come along, start a software firm composed of crazy men, and start churning out software designed for quantum chips. Once the OS and compiler is down, programming these things should be simple. Then imagine what the hell we could do with these computers.

    9. Re:The Bad News by Xserv · · Score: 1
      Yeah, right. Let me introduce myself, my name is Richard and I am Vice Peon, Assistant to the High Junior Acolyte In Charge of Dustbins of the Holy Order of 8th Day Advanced Micro Devicers. Once we were few in numbers, our faith challenged at every turn by the Church of Intel. Scoffed at, most cruelly as rank copyists without an innovation to our name. After years of wandering the wilderness between iterations our faith was rewarded most gloriously! Speak not of Quantum Notbooks and Handhelds being a thing of dreams, for we know the mighty AMD will deliver.

      Say it in a Borg voice and you just might convince me. :-P
      --
      "I love lamp."
    10. Re:The Bad News by freedom_india · · Score: 1
      I can see the advt. for Quantum Algorithm programmers coming out tomorrow:

      "Developers needed to develop advanced quantum computing algorithms. Min. 5 yrs exp. reqd. in writing such algorithms. Should be willing to travel."

      --
      "Doing what i can, with what i have." ~ Burt Gummer
  6. Wow...Imagine what they could do with that? by voss · · Score: 1

    A commodore 64 the size of a grain of rice!
    Unfortunately plugging in the joystics becomes harder. ;-)

    1. Re:Wow...Imagine what they could do with that? by joto · · Score: 2
      A commodore 64 the size of a grain of rice!

      Don't we already have this? I mean 64kB RAM and an old slow 68k processor. Shouldn't take up much space on a die... Probably much lesss than a grain of rice would!

    2. Re:Wow...Imagine what they could do with that? by davebert · · Score: 1

      68k? You're thinking of the Amiga. The C64 had a 6502, IIRC.

    3. Re:Wow...Imagine what they could do with that? by cskrat · · Score: 0

      Apple II had the 6502.
      C64 had the 6510 which could page between ROM and RAM at the addresses that the BASIC interpreter lived.

      --
      My God! It's full of eval()'s.
  7. I believe... by Anonymous Coward · · Score: 0

    ...that Slashdot already has this chip. When the great troll thread was "observed" by an editor, every post in the whole thread collapsed to a single state from a quantum superposition of many states.

  8. What would Neil say? by slashbob22 · · Score: 5, Funny

    That's one small chip for man, one Quantum leap for mankind.

    --
    Proof by very large bribes. QED.
    1. Re:What would Neil say? by Phil246 · · Score: 1

      better get ziggy to find out where you are then and what you need to do to leap again :)

    2. Re:What would Neil say? by Jonny_eh · · Score: 1

      No, that's what Scott (Bakula) would say.

    3. Re:What would Neil say? by Flunitrazepam · · Score: 3, Funny

      putting right posts that once went wrong, and hoping that the next post..... will be..... the first post

      --
      1) Your analysis is based on bad assumptions so your result is way off. 2) You're a sick bastard for fucking a horse.
    4. Re:What would Neil say? by caudron · · Score: 1

      What would Neil say?

      Is the answer to your question "Boomshanka"?

      What? You don't catch the reference? I'll wager some /.ers out there do. We One Youngs are everywhere!

      --
      -Tom
  9. There might be a small problem by suitepotato · · Score: 5, Funny

    as you might be able to know where the computer is but not what it is doing or what it is doing but not where it is at the same time...

    --
    If my grammar and spelling are off, I am [distracted/tired/careless] (take your pick)
    1. Re:There might be a small problem by skiddy · · Score: 5, Funny

      I think I have a quantum girlfriend :(

    2. Re:There might be a small problem by Anonymous Coward · · Score: 4, Funny

      I think I have a quantum girlfriend :(
      The rest of slashdot thinks you have an imaginary girlfriend.

    3. Re:There might be a small problem by blues_shuffle · · Score: 2, Funny

      You know she's leaving, but you don't know where she is?

    4. Re:There might be a small problem by svip · · Score: 1

      I can't mod you up but at least I laughed.

      --
      This is a sig. There are many others like it, but this one is mine.
    5. Re:There might be a small problem by nairb774 · · Score: 1

      This just needed to be said:

      <erno> hm. I've lost a machine.. literally _lost_. it responds to ping, it works completely, I just can't figure out where in my apartment it is.

      http://www.bash.org/?5273

  10. wtfosaurus rex says: by Anonymous Coward · · Score: 0

    University of Michigan scientists have created the first quantum microchip, which could be a giant stride in the race to produce a new generation of brawny, super-fast computers.

    Working with individual ions is key to building powerful computing machines that will exploit quantum physics -- instead of transistors -- and trump the power of today's most powerful supercomputers.

    So, on a semiconductor chip roughly the size of a postage stamp, the Michigan scientists designed and built a device known as an ion trap, which allowed them to isolate individual charged atoms and manipulate their quantum states.

    An ion expresses a positive or negative charge, depending on whether its parent atom has a missing or an extra electron. And ions are the preferred building blocks for a quantum system.

    "The cadmium atom that has lost an electron becomes a negatively charged ion, which can then be controlled with an electrical field," said Daniel Stick, a doctoral student in the University of Michigan's physics department who participated in the work.

    To isolate an ion, scientists confine it in the ion trap while applying electric fields. Laser light manipulates the spin of the ion's free electron to flip it between quantum states.

    The spin of the electron dictates the value of the quantum bit, or "qubit." For example, an up-spin can represent a one, or a down-spin can represent a zero -- or the qubit can occupy both states simultaneously.

    This enigmatic feature of quantum mechanics is what gives the qubit a powerful advantage over the binary digit of classical computing. Known as quantum superposition, the ability of the qubit to occupy two quantum states at once means that it can execute computations at an exponentially faster rate. Each time a qubit is added to a quantum system, its computing power doubles.

    The new chip, which is made of gallium arsenide, should be easily scaled and mass-produced, because it's made using microlithography -- the same process that makes microchips.

    Scientists can grow the chip using multiple one-atom-thick layers in a process called molecular beam epitaxy.

    The finished chip has an empty space in its center that is engineered to extremely precise dimensions. Cantilevered electrodes surround the space, which is open to allow laser beam access and observation of the trapped ion.

    Laser pulses fired into vaporized cadmium prepare ions for the trap. Once an ion is trapped, it floats in electric fields supplied by the chip's electrodes, according to Christopher Monroe, a physics professor at the University of Michigan who led the project.

    A valuable feature of the quantum chip is that its size can be scaled to accommodate the objectives of a particular project. "Our target is to eventually develop a chip that can entrap 10 ions at a time," said Monroe. "But the primary goal is to prove that it works."

    Will your notebook or desktop PC someday sport quantum innards? It's unlikely, at least in the immediate future. Researchers believe quantum systems will be much more efficient at rock-solid cryptography and mass database searches than running the latest version of Doom.

  11. Quantum Pairs by DigiShaman · · Score: 5, Funny

    Expect this story to be dupped again. This time, it will be the fault of their new CPU, not Slashdot.

    Finally, a dupe excuse for Slashdot!

    --
    Life is not for the lazy.
    1. Re:Quantum Pairs by saifatlast · · Score: 1, Funny

      Expect this story to be dupped again. This time, it will be the fault of their new CPU, not Slashdot.

      Finally, a dupe excuse for Slashdot!


      No, I think that just means we'll be seeing this one 4 times.

      Ziiinnngg!!!!

      --
      note: i'm known as plugwash most places but i screwd up registering that here somehow in the past and now can't regist
    2. Re:Quantum Pairs by ichigo+2.0 · · Score: 1

      And the duped story will be about how the University of Michigan didn't create a quantum microchip.

  12. Pun by Anonymous Coward · · Score: 0

    The first quantum chip is really light.

  13. How many Qubits? by Anonymous Coward · · Score: 1, Interesting
    The deparment new service article has a few more details. They don't state it explictly, but it seems to be implied that is only 1-qubit.

    So, they still have a ways to go if they haven't achieved a 2-qubit entanglement yet, but it is at least a manfacturing advance.

    1. Re:How many Qubits? by Shishberg · · Score: 1

      My interpretation (which could be totally wrong) was that the device is "scalable" in the sense that a chip is one qubit, but you can in theory put together, as it were, a Beowulf cluster of them to produce a multiple-qubit device.

      There are so many things wrong with what I just said that it's hard to know where to start. I dunno.

    2. Re:How many Qubits? by Anonymous Coward · · Score: 0

      Couldn't you have just explained you can put multiple cores on the same die without referring to the beowulf cluster? You know, I built a cluster back before these jokes were everywhere. 6 P-pro 200s. It was cool then to do it and among those in the know, to say it. Now, if the topic comes up and one of my friends starts to ask me about my cluster, I try to change the subject or pretend I don't know what they're talking about.

      I'm ashamed to admit now that I have built a beowulf cluster of those. I'm ashamed, and scared. Scared someone is going to point to my dual daul-core opteron workstation and say "imagine a beowulf cluster of those" and then I won't be able to stop myself as I lift up the spare 20 inch CRT and bring it crashing down on their heads with a vacant, crooked smile.

      As I come to, I realize I must run from the police and I get in my car and am thankful I have a V-6 instead of that old 4 banger. And then it comes to me "WHAT IF I HAD A BEOWULF CLUSTER OF THOSE 4 BANGERS?" I then giggle like a madman, turn the key and the radio comes on, and I think "what if I had a beowulf cluster of radios!". I tear out of my drive way like a bat out of hell, and get on the free way, and as I look around at all the cars, I can't help but think "Man, we could hook all these up in a giant beowulf cluster" while I laugh maniacly.

      Then the police come up behind me due to my erratic driving, and I see the lights flash, and I think "Beowulf cluster of lights." More laughter. After a beowulf cluster of a pile up, they drag me out of the car, as I'm laughing histerically. They then ask me if I've been doing narcotics. All I can say is "beowulf cluster of narcotics gets you arrested by a beowulf cluster of police".

      Shortly, some very nice people show up in white clothes and put a comfortable jacket around me. It's a beowulf cluster of jackets actually, and the color is a beowulf cluster of white. I'm then put into a beowulf cluster of ambulances and taken to a beowulf cluster of hospitals where I am treated by a beowulf cluster of doctors with a bewulf cluster of medications.

      Then my story is posted on slashdot, which I inadvertantly see. The very first post says "Imagine a beowulf clusters of this guy" and upon reading that, I slam my head into the CRT and am dead. Which is for the best, because if I were to be taken to a cemetary in that shape, with all those headstones and graves, it would not be good.

    3. Re:How many Qubits? by hdh · · Score: 1

      I realize that my threshhold for humor is very low.

      I find the beowulf cluster bit hilarious, if applied to articles sparingly.

      That said, this is hysterical. Thank you for salvaging this IT nightmare of a Friday. It's like getting kicked right in the beowulf clusters. Mod the boy, wouldn't you?

      --
      I like toast!
  14. M$ Windows XP compatible by ferar · · Score: 0, Troll

    In oher news, Bill Gates anounces xbox quantum for next summer.

    1. Re:M$ Windows XP compatible by slashbob22 · · Score: 1

      The Developers are expected to make it more stable then the current release or face the "Chairing of their life".

      --
      Proof by very large bribes. QED.
    2. Re:M$ Windows XP compatible by shaitand · · Score: 0, Flamebait

      Yup, that sounds like it should be in keeping with Microsoft's vaporware feature policies.

    3. Re:M$ Windows XP compatible by shaitand · · Score: 1

      After every major new feature being pulled from each new windows os before it hits the shelves this is flamebait??!!??

  15. involuntary response by ktulus+cry · · Score: 0, Offtopic

    GO BLUE!

    1. Re:involuntary response by Anonymous Coward · · Score: 0

      GO BLOW :-)

  16. Interesting, for two reasons by megla · · Score: 2, Insightful

    1: As a proof of concept, it's a good start. I was always rather unsure how practical all this QC stuff actually was, as although the benefits look great, the technology seems to be incredibly complex.

    2: It's a nice slap in the face for the various people who still doubt the validity of quantum theory itself. The fact that this is possible shows it's definately on the right lines.

    1. Re:Interesting, for two reasons by peterfa · · Score: 1

      Dude,
      I both doubt the validity of quantum theory and consider it valid, seriously. It's such a weird subject. Entanglement is just bazzar. It shouldn't be, for all I know, but it does. There is proof, but the proof conflicts with what is already known. It's just, Gah!!
      I'm in a two-state super-position on the subject. (sorry, pun intended)

    2. Re:Interesting, for two reasons by timeofmind · · Score: 1

      How does this prove the validity of the quantum theory? I'm talking about the statistical aspect of it. How does this show that the universe is a statistical phenomenon? There is no reason why quantum entanglement couldn't be described using a classical theory. How does the verification of an application of quantum entanglement prove anything? All it proves is that this natural phenomon can be useful to human applications. Just because a theory accounts for the existence of something, doesn't mean that the theory has been proven, when the existence is proven. Coming to such a short sighted conclusion is certainly not scientific method.

    3. Re:Interesting, for two reasons by fizzyabbo · · Score: 1
      There is no reason why quantum entanglement couldn't be described using a classical theory/
      I am on pins and needles awaiting your description of quantum entanglement in a classical framework. Don't leave us hanging, as Einstein and others have tried to do what you nonchalantly claim to be possible. The EPR paradox might be of interest to you.
    4. Re:Interesting, for two reasons by Anonymous Coward · · Score: 0

      "Entanglement is just bazzar."

      So, if I buy something in a shop here it determines the price of the same item in another shop?

  17. ah, but with quantum computing by geekoid · · Score: 4, Funny

    the dupe could be the first story!

    --
    The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
    1. Re:ah, but with quantum computing by mctk · · Score: 1

      Imagine how many frist-posts we'll have to dig through.

      --
      Paul Grosfield - the quicker picker upper.
    2. Re:ah, but with quantum computing by elliotCarte · · Score: 1

      the dupe could be the first story!

      Sheesh! Haven't you been paying attention? The dupe will both be the first story and not be the first story... at the same time, just as this post is both the first post and not the... ahhh, forget it! You're obviously reading this, which means you're not reading this, so why am I bothering?

      --
      If you can't just be yourself, then be more like me, ok?
    3. Re:ah, but with quantum computing by evilbessie · · Score: 1

      from TFA

      "The cadmium atom that has lost an electron becomes a negatively charged ion, which can then be controlled with an electrical field," said Daniel Stick, a doctoral student in the University of Michigan's physics department who participated in the work.

      I'm either being really stupid here or this is just plain wrong. As electrons are negatively charge (charge of electron = -1.6 x 10^-19 Coloumbs) so removing one would make a positive ion otherwise you've got an electron and a negative ion from the neutral initial atom (i'm assuming it was neutral beforehand).

      Just a point.

      enjoy

  18. Q-Net by Anonymous Coward · · Score: 0

    It would be a long way in the future, but I imagine that a quantum internet, where entanglement is used to transmit data instantly around the world, may one day be possible. Finally, no more lag! Even weirder, we could have computers, even single processors, consisting of multiple different parts around the world.

  19. Here's a Question for you: by SnoopJeDi · · Score: 4, Interesting

    From TFA:

    Researchers believe quantum systems will be much more efficient at rock-solid cryptography and mass database searches than running the latest version of Doom.

    Any particular reason why? I mean, bits are bits, are they not? Or is this saying a game architechture couldn't take advantage of a qubit?

    The Power of Quantum Computers is a good insight into just why this is a good system for factorization, and thus, breaking the stuffing out of encryption systems.

    1. Re:Here's a Question for you: by Rac3r5 · · Score: 1

      I think this statement is the same as what that IBM guy said about there being a market for just 1 or 2 computers in the world.

      I don't see why it would be better at solving 1 mathematical problem over another. Anyone who has done game programming knows that most of it is basically mathematics. Positioning, rendering, trajectory etc.

      I don't see why computing factorials would be the only use?

    2. Re:Here's a Question for you: by Bazzalisk · · Score: 1
      Modern games programming only uses certain mathematical operations over and over again. That's not to say that someone won't come up with an inovative new kind of game that uses the factoring of large numbers as part of its processing, of course.

      Oh, and factoring numbers is not the same as computing factorials ;)

      --
      James P. Barrett
    3. Re:Here's a Question for you: by imsabbel · · Score: 4, Insightful

      No, qbits arent bits.
      Since reading a "register" destroys the coherent stats and leads to one (of the many possible) readings, you cannot use most algorithms with quantum chips.
      There are only a handful algorithms yet that work theoretically at all (like the famous shore-algorithm to factorize numbers). As a easy guideline, the "you can calculate all possible combinations at once" idea of quantum computing is destroyed for most stuff because of the reading limitations.
      So the way to go is trying to find algorithms in which the end result of the quantum register will give a bias in the readout that will give you a hint for the properties of a large manyfold of input factors.

      --
      HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
    4. Re:Here's a Question for you: by Anonymous Coward · · Score: 0

      The reason it won't work for Doom is that, since it depnds upon the quantum state of the CPU's registers, the state of the frag will be indeterminate until some outside observer comes along and the event collapses.

    5. Re:Here's a Question for you: by Senjutsu · · Score: 2, Insightful

      From the very article you linked:

      The class of problems that can be efficiently solved by quantum computers is called BQP, for "bounded error, quantum, polynomial time". Quantum computers only run randomized algorithms, so BQP on quantum computers is the counterpart of BPP on classical computers.

      I don't know how much of a background you have in Computational Mathematics, but the gist of it is that the properties that make a quantum computer very, very good at things like encryption make them very, very bad at everyday, deterministic stuff like desktop computing.

    6. Re:Here's a Question for you: by zwad · · Score: 1

      Quantum Computers are only faster when there is a Quantum Algorithm for the problem at hand. Quantum Algorithms are very tricky to come up with. It is really not known what problems can be solve quicker by Quantum Computers. But right now the only problem I know of that has been solved is factoring.

    7. Re:Here's a Question for you: by Kesch · · Score: 1

      Doom is very quantum. Monsters exist in variable states of dead and not dead until you shoot them. Only then can you deterministicaly say they are dead.

      --
      If this signature is witty enough, maybe somebody will like me.
    8. Re:Here's a Question for you: by centie · · Score: 5, Informative

      The problem is that there are only a very limited number of quantum algorithms which give a significant increase in performance over classical computing. Infact, there's only really two main classes; those based on Shors quantum fourier transform and those based on Grovers quantum search. So the possibility for exponential (Shor) or quadratic (Grover) performance gains, at the moment, is only available for a very limited number of problems. Not to say that in the future someone wont develope an algorithm which allows doom to be run faster, just at the moment its not known.

      For the first replier, qubits do NOT have three states of 1, 0 and 1&0. They are a superposition of 1 and 0. Think of it like a globe with 1 at the north pole and 0 at the south, the value of the qubit can be any point on the surface of the globe. This gives an infinte number of values, not just 3.

    9. Re:Here's a Question for you: by Anonymous Coward · · Score: 0

      But once we have the quantum algorihms for a quantum compiler, won't it be able to generate quantum algorithms for us??

    10. Re:Here's a Question for you: by ehrichweiss · · Score: 1

      The reasoning is because a quantum cpu does all of its calculations at the exact same instant. This is great for cryptography, well at least cracking it, because it would need only one iteration of an algorithm to extract a key. For Doom, this would be pointless as each computation doesn't require trillions of billions of iterations to get a single answer like, say, where a player is on the map or a pixel on the screen.

      --
      0x09F911029D74E35BD84156C5635688C0
    11. Re:Here's a Question for you: by wgaryhas · · Score: 1

      Wouldn't that feature make it desirable to figure out a way to do ray tracing or particle movement on a quantum computer?

      --
      "For every complex problem, there is a solution that is simple, neat, and wrong." - H.L. Mencken
    12. Re:Here's a Question for you: by zwad · · Score: 1

      NO. I suppose it depends what you mean. Currently a Compiler for a quantum algorith is actually a classical computation. They might discover ways to speed up lots of things doing quantum computers..i think its really kind of unknown right now...if they will find many usefull quantum algorithms or not.

    13. Re:Here's a Question for you: by Surt · · Score: 1

      I'm sure if this becomes reasonably priced it will not be long before we develop algorithms for 3d such as resolving the shading for a large set of possible lighting conditions and then selecting the lighting condition of interest. Anything that can solve an enormously parallel math problem quickly will fast find widespread use in video applications.

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
    14. Re:Here's a Question for you: by Directrix1 · · Score: 1

      So its like analog?

      --
      Occam's razor is the blind faith in the natural selection of least resistance and in universal oversimplification. -- EF
    15. Re:Here's a Question for you: by arrrrg · · Score: 1

      Since all of the other answers to your ? seem a bit off, I'll take a shot at it. Qubits can be used as ordinary bits with no problem, by simply avoiding superpositions of states. The issue is a practical, not theoretical one; why would you go to all the trouble of lasers and ion traps yaddy yadda to build a 10 bit (i.e. only 10 computing elements) computer that runs at perhaps 1000 Hz, when you could easily build a chip with 10 billion transistors clocked at 100 GHz instead (ballpark figures for today's chips). It will be a long time, if ever, before a quantum computer would also be a practial, efficient classical computer. The gain from QC comes in from using special-purpose quantum algorithms such as Shor's algorithm (exponential speedup over classical computers specific to the factoring problem) or Grover's algorithm (quadratic speedup on all NP complete problems), plus more algorithms yet to be discovered (the field is fairly new). On an ordinary classical algorithm, a decent QC will perform at the level of a classical computer from before I was born.

    16. Re:Here's a Question for you: by Anonymous Coward · · Score: 0

      Well actually there's also algorithms for simulating quantum mechanics. They should revolutionize computational chemistry.

    17. Re:Here's a Question for you: by ehrichweiss · · Score: 1

      Not really. Raytracing is a bunch of complex calculations to be certain but unlike cryptography, the result isn't already known so you'd have to determine if you got the correct answer or one of the trillions of incorrect ones. In other words, it's great for factoring where you have answer X and you want to know which two prime numbers were multiplied to get it as it will compute all the possibilities simultaneously "until" the answer is found, but in raytracing you don't have the answer beforehand and so nothing to test to see if you got the correct answer.

      Think of it as a way to weed the hundreds of trillions of wrong answers out in equations and leave you with the one good one.

      --
      0x09F911029D74E35BD84156C5635688C0
  20. VC pre-marketing branding research... by Anonymous Coward · · Score: 0

    ...in an effort to capitalize on stressing the inexpensive substrate, and finding naming the chip Gallium too redundant, selected Arsenium instead, which coincidentally also provided a necessary disclaimer--that the processor is currently only capable of presenting slightly funny comedy video.


    The chip would, additionally, have little difficulty rendering this post.

  21. Qubit can occupy both states simultaneously? by Anonymous Coward · · Score: 0

    The spin of the electron dictates the value of the quantum bit, or "qubit." For example, an up-spin can represent a one, or a down-spin can represent a zero -- or the qubit can occupy both states simultaneously.

    Talking about storage, does that mean my HD has my MP3's but is blank at the same time?

  22. No Doom???? by hellfire · · Score: 1, Offtopic

    Will your notebook or desktop PC someday sport quantum innards? It's unlikely, at least in the immediate future. Researchers believe quantum systems will be much more efficient at rock-solid cryptography and mass database searches than running the latest version of Doom.

    NOOOOOOOOOO!!!!!!!!!!!!!!!!! I'm crushed!

    --

    "All great wisdom is contained in .signature files"

    1. Re:No Doom???? by Danimoth · · Score: 1

      Don't worry, following the rate at which they release Doom games, it should be ready by Doom 4.

      --
      No smoking sigs indoors.
  23. Qauntum clock speeds. by Kesch · · Score: 1

    What they didn't tell you is that every time they tried to measure the speed, the chip would break.

    --
    If this signature is witty enough, maybe somebody will like me.
    1. Re:Qauntum clock speeds. by Dragoonmac · · Score: 1

      Or According to Schroedinger Applied: The Computer, Until it is measured, is in a "beta" state where it is half functional and half unfunctional, until you look up from the comment you have been typing.

      --
      Shots: A Populist Parable
  24. Obviously designed for windows by hurfy · · Score: 4, Funny

    "For example, an up-spin can represent a one, or a down-spin can represent a zero -- or the qubit can occupy both states simultaneously"

    This way windows can be working and not working at the same time.

    oh, wait.....

    1. Re:Obviously designed for windows by Anonymous Coward · · Score: 0

      This way windows can be working and not working at the same time.

      You mean not working and not working at the same time! :)

    2. Re:Obviously designed for windows by mattwarden · · Score: 1

      The computer is in both working and not working states simultaneously until one measures the the state with Task Manager. Thus, Windows is flawless.

    3. Re:Obviously designed for windows by Sathias · · Score: 1

      Schrodingers Blue Screen of Death and not Death?

      --
      Blessed are the 1337, for they shall pwn the earth.
    4. Re:Obviously designed for windows by Surt · · Score: 1

      That's marvelous, a 50% improvement in uptime!

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
  25. it reminds me of the old memory by doorbender · · Score: 1

    the one that was two wires crisscrossing in a ring magnet. anyone else remember those?

    --
    "He's a real midnight golfer"
    1. Re:it reminds me of the old memory by tduff · · Score: 1

      Core memory? My grampa told me about that. He used it on the first ever framebuffer.

    2. Re:it reminds me of the old memory by emandres · · Score: 1

      They actually still use that in satellites and other space bound things because it resists corruption from solar waves and whatnot.

      --
      The only way to tell the difference between a hamster and a gerbil is that the hamster has more white meat.
    3. Re:it reminds me of the old memory by meta · · Score: 1

      My PC has that. Of course it's 30 years old.

      --
      Sometimes they fool you by walking upright.
  26. why bad news? by Spy+der+Mann · · Score: 2, Insightful

    I'm GLAD it won't happen soon! Imagine someone tapping into your SSL sessions with his quantum chip!

    Besides, i'm much more interested in optical or spin-based chips with nearly zero-power-consumption than a quantum entanglement chip.

    1. Re:why bad news? by Hurricane78 · · Score: 1

      Troll?? i can't see why?
      Must be a moderator who thougt he had to mod what HE is. ;P

      But to get back to parent post: You would simply not use ssl but your own quantum-encryption chip. Then it will be physically impossible to tap your connection without getting caught while still just getting out useless data. (Don't stake me if this is not 100% correct! ;)

      Besides: I would love nearly zero-power-consumtion chips as i like those displays that already do that. :D

      --
      Any sufficiently advanced intelligence is indistinguishable from stupidity.
    2. Re:why bad news? by Spy+der+Mann · · Score: 1

      Thanks for your support. Apparently the mod's quantum was spinning on the wrong side :P

      Anyway, my point is, we'd need quantum encryption BEFORE quantum decryption, otherwise the crackers would start eavesdropping like they do with zero-day exploits today.

      But how are we supposed to do that? We'd need to regulate the quantum cryptography hardware, perhaps even with some DRM to protect the general public's privacy (who'd have thought?). Then, when the encryption is regulated enough, quantum encryption chips can go mainstream and be distributed regularly.

      This would look something like the govt's policy on encryption, with the exception that quantum boxes can decrypt unknown data (SSL i mean), whereas SSL algorithms today cannot decrypt unknown SSL data.

      Yes, the arrival of quantum cryptography hardware would be a complete revolution, if not chaos. It'd be interesting to write a sci-fi paper about what would happen when that day arrives.

    3. Re:why bad news? by joto · · Score: 1
      Quantum encryption isn't really encryption. It's a scheme for transferring data on a secure line. You can't use quantum encryption to send data across the Internet, or an untrusted phone line. A better comparison would be to compare quantum encryption with sending your data with a courier on a disk in a sealed envelope (For better security, you could use multiple couriers, and letting your data be the XOR of all the disks).

      If you want traditional cryptography to continue working, then you either need to use larger keys than the largest quantum computer can handle, or you need to use encryption schemes that are not crackable by quantum computers (such encryption schemes exist, but AFAIK not for public-key cryptography).

      Steganography is also an increasingly attractive option, especially when considering the amount of data people exchange these days (bury your "meet me at the pub at 18:30" among the 8GB of data in a DVD movie, and it could be pretty hard to detect!)

    4. Re:why bad news? by Hurricane78 · · Score: 1

      > (bury your "meet me at the pub at 18:30" among the 8GB of data in a DVD movie, and it could be pretty hard to detect!)

      But mainly because it will be burned with you (and the recipent) on the great RIAA/MPAA pyre... *sad*

      --
      Any sufficiently advanced intelligence is indistinguishable from stupidity.
  27. But surely... by Anonymous Coward · · Score: 1, Funny

    that means when they know what speed it's running, they won't know where it is?

    (Yeah, bit rubbish, sorry)

  28. Hmm. by oGMo · · Score: 2, Insightful
    Researchers believe quantum systems will be much more efficient at rock-solid cryptography and mass database searches than running the latest version of Doom.

    They have no idea what this will lead to. Remember research 50 years ago? Huge, vacuum tubes, hundreds of calculations a second (maybe). They thought the world would have maybe 5-10 computers. Who envisioned Doom, or the Internet?

    Same way with quantum computing. Right now we have very primitive experimental technology and think a few researchers might eventually benefit. I'd like to see what we're doing in 50-100 years.

    --

    Don't think of it as a flame---it's more like an argument that does 3d6 fire damage

    1. Re:Hmm. by Quaoar · · Score: 1

      Time will tell, but there are only 3 problems that quantum computers are (theoretically) good at:

      Integer factorization
      Discrete log problems
      Quantum physics simulations

      More problems might be found, but I don't think you'll be running "Doom" on your quantum computer because of this limitation.

      --
      I'll form my OWN solar system! With blackjack! And hookers!
    2. Re:Hmm. by Anonymous Coward · · Score: 0

      There's a few more - reverse phonebook searches, for example. It's not as much of an improvement - only linear time to square root time - but it's still better than the best theoretical classical algorithm.

      I fully expect more to be found. The basic problem is that making algorithms for quantum computers is hard - humans have no intuitive grasp of how to do it. It seems reasonable, for example, that quantum computers might be able to solve NP problems faster than classical computers (it's the type of thing they're good at).

    3. Re:Hmm. by MSBob · · Score: 1

      Unless you believe some theories that speculate that a brain is a quantum computer. Quackery? Well, there are peer reviewed papers on the subject.

      --
      Your pizza just the way you ought to have it.
    4. Re:Hmm. by oGMo · · Score: 1
      And a regular computer is only really good at one thing: adding. Or, possibly, you could split it down to the few basic bitwise logical operators, excluding even basic arithmetic on anything larger than single binary bits.

      Of course, everything else follows---but not obviously so, when you're just starting. We're looking at the very ground level.

      --

      Don't think of it as a flame---it's more like an argument that does 3d6 fire damage

    5. Re:Hmm. by Psykus · · Score: 1

      I've always imagined that once computers are powerful enough to actually simulate every aspect of physics, right down to the atom and everything, we could have games that are essentially as real as life. Imagine having lifelike sound, becuase the game can calculate what sound would be created from the vibration of the atoms in a steel sword hitting a shield, for example. The same thing could be done with lighting, again, with enough power.

  29. This could turn security inside out..... by ShyGuy91284 · · Score: 2, Insightful

    When (if) a quantum computer can eventually be made, it'll probably have more then enough power to crack many of the currently used encryption schemes. Such a big jump in computing ability (from that little I've read about quantum computing and my roommates ranting, it's that powerful) will definately present a problem for security schemes. Things may get interesting then......

    --
    In undeveloped countries, the consumer controls the market. In capitalist America, the market controls you.
    1. Re:This could turn security inside out..... by Anonymous Coward · · Score: 0

      what you fail to realize is that technology takes care of itself. Encryption will be easier to crack at current standards, but expect the encryption standards to take advantage of this technology at both ends....meaning yeah, you'll be able to do infinitely more computations, but you'll also be able to apply infinite level encryption to begin with.

    2. Re:This could turn security inside out..... by Dan+East · · Score: 1

      Which is why the NSA hasn't gone public about their quantum computers yet. We'll be watching a show about it on the History channel in 15 years.

      Dan East

      --
      Better known as 318230.
    3. Re:This could turn security inside out..... by Surt · · Score: 1

      The primary consumers of cryptographic security systems are financial systems. When quantum computers are sufficiently advanced to threaten their security, they will have to invest in physically secure communications systems. Which are fortunately already reasonably inexpensive, and will only become more so with time. On the other side of things, you will no longer be able to keep secrets from the police cryptographically, so that will be a bummer.

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
    4. Re:This could turn security inside out..... by some+damn+guy · · Score: 1

      As i understand it, this is pretty overrated, since the computer can have only so many quantum bits. Sure, if you had 256 such bits you could try all the possible combinations for keys of that length at once, but you could just make the key longer, say 512, to cope with it. You end up right back where you started with a exponential-time process.

      Of course, if someone doesn't KNOW such a computer exists, they might not plan for this. This is the only real advantage, unless maybe someday you have systems with very large numbers of quantum bits and the key lengths required become impractical for encoding/decoding, but all of this seems a long way off. It's hard enough to make ONE quantum bit, so it seems unlikely that there are secret systems already in place with hundreds working together (It's a little more complicated than a flip-flop, after all.)

      So it seems that if you have your tinfoil hat and your 1024 bit key length you should still be fine for some time.

    5. Re:This could turn security inside out..... by marcosdumay · · Score: 1

      Sorry to upset you, but there are several quantum computers out there. And none of them are able to break any used criptography process yet.

      But you can always wait for (if) large enough quantum computers.

  30. Electric Charge by stoutpuppy · · Score: 0

    Damn Americans... electrons have a negative charge and losing an electron creates a cation (positively charged ion) not an anion (negatively charged ion). Electricity flows with electrons (negative), they are not positive just because it looks nicer. Now if we want to change the definition of charge for protons, antiprotons, and positrons as well and create that as the generally accepted standard through legitimate means then that's okay but American 'behavior' (see or, our) is rather ego-centric.

  31. Article Error? by hereschenes · · Score: 0, Redundant
    FTA:
    "The cadmium atom that has lost an electron becomes a negatively charged ion, which can then be controlled with an electrical field," said Daniel Stick, a doctoral student in the University of Michigan's physics department who participated in the work.

    I haven't done physics since first year university, so I could well be speaking from ignorance, but can someone explain to me how an atom that loses an electron becomes negatively charged?

    --
    More like... nerdular nerdence!
    1. Re:Article Error? by cyberfunk2 · · Score: 1

      Unless something weird is going on.. it shouldnt. Likely an article error. I posted on the same thing about 10 seconds later than you, too. :)

      Leave it to slashdot to correct press-science. In fact, come to think of it, I think a lot of major news articles would benefeit from being run by the hawkish eyes of the slashdot crowd. There's so many errors in science journalism these days its embarrassing for the media.

    2. Re:Article Error? by dawhippersnapper · · Score: 1

      If it had more than one too many in the first place =)

      --
      Freedom is fragile and must be protected. To sacrifice it, even as a temporary measure, is to betray it.
    3. Re:Article Error? by cyberfunk2 · · Score: 1

      I'd buy that.. but metal atoms REALLY dont like to be simple anions (i.e. -1), let alone -2, which would be the requisite. The real trick would be to keep the metal from giving up that extra electron.

    4. Re:Article Error? by Anonymous Coward · · Score: 0

      damn you! beat me to pointing this out by 3 minutes. hehehe

    5. Re:Article Error? by Bobke · · Score: 1

      antimatter?

  32. uh oh... by seven+of+five · · Score: 0, Flamebait

    quantum computing leads to uncrackable DRM?

    1. Re:uh oh... by Anonymous Coward · · Score: 0

      If you can see it or hear it, no DRM (however powerful) can prevent copying.

  33. Another question by Nymz · · Score: 1

    Each time a qubit is added to a quantum system, its computing power doubles.

    Wouldn't a regular binary 2-postion bit (0 or 1) double the "power"? Similarly, wouldn't a qubit, 3-position bit (0 or 1 or both) triple the "power"?

  34. Backwards? by Anonymous Coward · · Score: 0
    FTA: "The cadmium atom that has lost an electron becomes a negatively charged ion"



    Umm... since electrons are by definition negatively charged, wouldn't losing one make the it a POSITIVELY charged Ion? Or am I missing something?

    1. Re:Backwards? by the+chao+goes+mu · · Score: 1

      I was about to post on the very same thing!
      QUOTE:
      "The cadmium atom that has lost an electron becomes a negatively charged ion, which can then be controlled with an electrical field," said Daniel Stick, a doctoral student in the University of Michigan's physics department who participated in the work.
      And he's a doctoral student? Losing 1 negative charge makes the atom negative? Huh?,br> Don't think I'll be putting too much faith in this particular computer.

      --
      Boys from the City. Not yet caught by the Whirlwind of Progress. Feed soda pop to the thirsty pigs.
  35. Say what??! by Anonymous Coward · · Score: 0

    "The cadmium atom that has lost an electron becomes a negatively charged ion, ..." said Daniel Stick, a doctoral student in the University of Michigan's physics department...

    So losing an electron gives you NEGATIVE charge? woooow, this quantum stuff is REALLY new and innovative...

  36. Uh... Chem 101 anyone ? by cyberfunk2 · · Score: 2, Informative

    I'm sure they're doing some great work... but my chemistry tells me something a little funny about this quote:

    "The cadmium atom that has lost an electron becomes a negatively charged ion, which can then be controlled with an electrical field," said Daniel Stick, a doctoral student in the University of Michigan's physics department who participated in the work.

    Excuse me ? Generally when atoms LOSE electrons, they become POSITIVE. Quantum wierdness indeed.

    1. Re:Uh... Chem 101 anyone ? by cyberfunk2 · · Score: 1

      P.S. to avoid the standard "I am not a chemist but..."
      I am a chemist.

    2. Re:Uh... Chem 101 anyone ? by stoutpuppy · · Score: 0

      I posted the same thing in another post. Either a simple gamma-geek muck up or they were taught good old Southern American Science mmmMmmm good. I'm quite sure they were unable to synthesize an anti-cadmium atom since they can't get past hydrogen yet. Anti-hydrogen is also difficult to make as is and annihilates with normal matter. That's the only way electro-magnetic properties should be opposite.

    3. Re:Uh... Chem 101 anyone ? by h2oliu · · Score: 1

      I submitted that to Wired, yesterday. They ignored me. I'm glad someone here pointed it out.

      --
      Ok, I give up, why you?
    4. Re:Uh... Chem 101 anyone ? by Merle+Darling · · Score: 1

      Aw, damnit.. You beat me to it too, now I'm going to be smoking the redundant mods. Thanks a lot! =)

      --
      "Bother," said Pooh, as lightning knocked out hi%#&(F*@NO CARRIER
    5. Re:Uh... Chem 101 anyone ? by stoutpuppy · · Score: 0

      God damn little kids and their pyramid schemes should be removed from here.

    6. Re:Uh... Chem 101 anyone ? by cyberfunk2 · · Score: 1

      Amusingly enough, someone else beat us both to it, so i'm gonna be feeling the redundancy wrath, too.

    7. Re:Uh... Chem 101 anyone ? by asadodetira · · Score: 1

      I agree, the following joke proves it:

      Atom 1- Are you sure you lost an electron?

      Atom 2- I'm positive.

    8. Re:Uh... Chem 101 anyone ? by stoutpuppy · · Score: 0

      Haha that's a good one. I shall use it in the future to help others who need rhymes and such things to help them remember things.

    9. Re:Uh... Chem 101 anyone ? by Anonymous Coward · · Score: 0

      Atom1: Hey I lost an electron! Atom2: You sure? Atom1: I'm positive!

    10. Re:Uh... Chem 101 anyone ? by Anonymous Coward · · Score: 0

      I noticed that too... but being a Michigan student I automatically assume the blame lies with Wired News.

      That's more of an OSU-caliber mistake, really.

    11. Re:Uh... Chem 101 anyone ? by nincehelser · · Score: 1

      >Excuse me ? Generally when atoms LOSE electrons,
      >they become POSITIVE. Quantum wierdness indeed.

      In this world, that is true.

      I'm sure that quote is just cross-talk from an alternate reality.

      One must expect these kinds of problems when mucking around at the quantum level.

    12. Re:Uh... Chem 101 anyone ? by TheDugong · · Score: 1

      Atom1: I just lost a proton!

      Atom2: Stop being so negative!

      Boom boom!

    13. Re:Uh... Chem 101 anyone ? by n6kuy · · Score: 1

      Q. And, how are your quarks feeling today?

      A. Charmed, I'm sure.

      --
      If you disagree with me on social issues, then it's pretty clear that you are a narrow-minded bigot.
    14. Re:Uh... Chem 101 anyone ? by alan.briolat · · Score: 1

      I thought that too, was going to post that until I saw someone already had... Makes you wonder whether it was a mis-quote by Wired, or if the person in question was just high at the time :D

      --
      I swear we should be allowed to give mod points to sigs... "-1, Offtopic"
  37. Quantum Leap... by slashslashdotdot · · Score: 1

    And the U of M Dean wonders if each new leap will be the leap home.

  38. Huh? by nEoN+nOoDlE · · Score: 2, Funny

    No fair! You've changed the outcome by measuring it!

    --
    Don't trust a bull's horn, a doberman's tooth, a runaway horse or me.
    1. Re:Huh? by hedwards · · Score: 1

      I know that is a joke, but I was wondering how "Observer state" or Bohr's "Spookiness at a distance" would affect this. Obviously if some particle somewhere else is able to change the spin there are possibly some really serious problems with relying on spin. Otherwise, it does sound like there would be the possible of giving up 1s and 0s for 0s, 1s, and 2s.

  39. Sooner or later this will happen by JabrTheHut · · Score: 1

    Ah... ahh.... ahhh choooo!

    Hey, were did my CPU upgrade go?

    --
    Work like no one is watching. Dance like you've never been hurt. Make love like you don't need the money.
  40. Comment removed by account_deleted · · Score: 2, Informative

    Comment removed based on user account deletion

  41. Another stunt by a university by QuantumG · · Score: 1

    Why is stuff like this left to university departments anyway? Where's the startup companies doing research to make a quantum chip and be the next Intel/Motorolla/AMD? Speaking of the current giants, why aint they doing this research in an effort to stay ahead of their competitors? It's just fat cat compacancy and it makes my stomach churn to see no-one putting their hand up to knock them off their perch.

    --
    How we know is more important than what we know.
    1. Re:Another stunt by a university by svnt · · Score: 1

      From the group's "Acknowledgements" section:

      "Funding for this research is provided by the Advanced Research and Development Activity (ARDA), the National Security Agency (NSA), the Army Research Office (ARO), the Defense Advanced Research Projects Agency (DARPA), and the National Science Foundation Information and Technology Research (ITR) Program. Our group is a part of the National Science Foundation FOCUS Physics Frontier Center and the College of LS&A Optical Physics Interdisciplinary Laboratory."

      Best of luck to the startup rolling against 300 million taxpayers.

    2. Re:Another stunt by a university by McGiraf · · Score: 0

      Don't worry, when the unversities research funded by public money will have detemined if it's workable or not and how to do it and that there is no risk of it being a dead end, private companies will do a bit of tax deductible R&D to make it commercialy vialble, patent it .... and sell to you, with a huge margin, what was developed with your taxes paid!

      All is OK.

    3. Re:Another stunt by a university by fizzyabbo · · Score: 2, Informative

      A quick search on Google would suggests that there is increasing interest in this field. How aboutIBM , as well as a start up company called D-Wave Systems located in Vancouver, for a start.

      As for my two cents, don't bet on an up-and-comer quantum-computer-making-business "knock them [the processor giants] them of their perch". The article (in addition to previous stories) doesn't predict a quantum computer that you'll be able to buy off the shelf and use on your desktop. Perhaps a look at the current prospects for implementations of quantum computers, and a miniscule amount of common sense would convince you of this unliklihood.

    4. Re:Another stunt by a university by jmataya · · Score: 1

      How exactly can this be classified as a stunt? Just because U of M developed this technology doesn't at all cheapen it. It's precisely the task of universities to push the boundaries of knowledge and what we can do. And don't forget that the University of Michigan is a business, as are other institutions like Cal Tech and MIT. The university system has always had a hand in helping push research in technology. Of course I'm not saying that private enterprise shouldn't be researching quantum computing, I just don't understand why you discount progress just because it's made by a university.

    5. Re:Another stunt by a university by QuantumG · · Score: 1

      Revolutionary technology is rarely predicted, let alone by journalists at Wired.

      --
      How we know is more important than what we know.
    6. Re:Another stunt by a university by QuantumG · · Score: 1

      Suppose there were some people who would like to buy a few of these chips for some application? Can they get a price? No? It's a stunt. You announce products not research.

      --
      How we know is more important than what we know.
    7. Re:Another stunt by a university by raftpeople · · Score: 1

      So each of the quantum computer advances that have been announced over the last 8 years by IBM, HP and others were all stunts also?

      Do scientists not routinely publish information gained from doing research?

      Is this not exactly how scientists are able to build on each others work to rapidly move forward in difficult fields like this?

      I'm stunned at the ignorance.

    8. Re:Another stunt by a university by fizzyabbo · · Score: 1

      I assume the revolutionary technology to which you're referring is the quantum computing technology that will allow everyone to have a quantum computer (and play Duke Nukem Forever, Windows Vista, etc). Let's not forget that no useful quantum computer has ever been built, let alone one that is viable for consumers.

    9. Re:Another stunt by a university by QuantumG · · Score: 1

      Publish != Press Release. Applying known techniques to create something that you don't intend to sell is a stunt.

      --
      How we know is more important than what we know.
    10. Re:Another stunt by a university by QuantumG · · Score: 1

      You know that at one point a personal computer was the fevered dream of a madman right? Same with a laptop. Same with a PDA. Hell, same with a freakin' digital wristwatch. That's the whole point of inventing something.. it doesn't exist until you do. Until Woz sat down and designed the Apple I the concept of a personal computer that was "viable for consumers" had ever been built. That didn't stop him from building it. Have some imagination.

      --
      How we know is more important than what we know.
    11. Re:Another stunt by a university by fizzyabbo · · Score: 1

      I see your point, however I'll stick to my cautious (but hopeful) skeptism. My point is simply that the idea of useful quantum computing is still a pie in the sky concept. Dreaming about desktop Quantum PCs (while fun), does not solve what many experts still view as insurmountable problems, such as decoherence time, thermal noise, etc. To me, as a scientist, such imaginating would probably be more beneficial if it were applied to these pressing issues, instead of fantasies that would be more suited to a science fiction novel. I still fully agree that imagination drives innovation. It's just that I believe we should at least keep our predictions for technology in the ballpark of one order of magnitude of that is even theoretically possible.

      As far as Wozniak goes, his rendition of the PC in 1975 is a completely different matter because the proof of a working electronic computer which had preceded him by over 25 years. The outlook for classical computing in 1975 was far more certain than that of quantum computing right now. As for laptops, PDAs, etc., these devices are simple refinements of the same general formula. Super-conducting quantum computers, for example, require huge dilution fridges to maintain the temperature needed for superconduction. The approach is definitely promising, however, it is not scalable at all for personal use.

    12. Re:Another stunt by a university by Anonymous Coward · · Score: 0

      It's clear that you have no idea what the current state of the art is. What the article describes is a novel device, and while the fabrication techniques might look similar to those employed for current micro devices, the end result is pushing the envelope.

      As for the whole thing being a stunt, you're mistaken. Believe me, if they could sell these chips they would. Who the hell do you think would buy them though? These advances are made at universities because such advances are merely intermediate steps towards something that might be useful. Science is an academic process; not one which will always result in money, or technological revolution.

    13. Re:Another stunt by a university by Anonymous Coward · · Score: 0

      Building a useful ion-trap quantum computer is, in terms of difficulty, investment, and near-term utility, similar to the building the first atom bomb. As it was then, it is now: universities do the early research, large corporations and universities are prime contractors for the government in the ramp-up and production phase, and the government is the only near-term customer for the end product.

    14. Re:Another stunt by a university by TrekkieGod · · Score: 1
      Well, it's not really that simple. The press release is useful to announce the type of stuff they're working on to the world at large. Companies interested in the subject will then look for the related papers, and if it shows promise, could be interested in funding future research on the subject, which is what the university is after. Once the research reaches a point where it's commercially viable, different companies will take over, and the students that participated in this research will suddenly have prime job opportunities. It's a good system for all involved.

      It's really only a stunt if they're announcing something they don't really have. If they're actually doing the research and getting results, it's just a way to attract funding, and you can't think that's a bad thing.

      Of course, my sig might be particularly relevant to this post...IAGS (I Am a Grad Student), though not at the university of michigan, nor in a related field.

      --

      Warning: Opinions known to be heavily biased.

  42. Am I missing something? by Merle+Darling · · Score: 2, Informative

    From TFA, emphasis added:
    "The cadmium atom that has lost an electron becomes a negatively charged ion, which can then be controlled with an electrical field," said Daniel Stick, a doctoral student in the University of Michigan's physics department who participated in the work.

    Maybe I'm missing something here, but basic high school chemistry says that an atom that loses an electron has an overall positive charge, which makes it a positively charged ion or a cation...

    I'm not sure I want this guy designing my computer. =)

    --
    "Bother," said Pooh, as lightning knocked out hi%#&(F*@NO CARRIER
    1. Re:Am I missing something? by Tharkban · · Score: 2, Insightful

      It's not very nice to highlight his name. If he's designing quantum computers, he either had a dislexic moment or got misquoted. My guess is the latter.

      --
      Tharkban (It is a signature after all)
    2. Re:Am I missing something? by cyberfunk2 · · Score: 1

      I believe he was highlighting the fact that he was a doctoral student, who really should know these things. But knowing the press, I bet it was them and not him who's at fault w/ the misquote.

      In any event, it's still the press's fault for not checking what should be an obvious discrepancy in a story. But that would require the writer to have a good solid science background, which many journalists, sadly, do not.

    3. Re:Am I missing something? by robertjw · · Score: 1

      Since when is high school chemistry considered a 'good solid science background'? You would think they could at least higher high school graduates to write their stories.

    4. Re:Am I missing something? by JDevers · · Score: 1

      Yea, because high school graduates never make mistakes...even after they are "highered".

      In case your sarcasm mode isn't enabled, it would be hire instead of higher.

    5. Re:Am I missing something? by cyberfunk2 · · Score: 1

      It's not considered one, and I never said it was. But clearly whoever wrote the article is either sloppy (or their editor was) or just didnt have the requisite understanding of science.

    6. Re:Am I missing something? by ceoyoyo · · Score: 2, Funny

      No, but REMEMBERING your high school chemistry is a 'good solid science background.' Also very rare.

    7. Re:Am I missing something? by robertjw · · Score: 1

      I was hoping my editor would catch that.

  43. No DOOM? by Yurka · · Score: 1

    "I think there is a world market for maybe five computers".

    Attributed to one Mr. Watson, president of International Business Machines corporation, in 1943.

    Insert the word "quantum", shake, repeat (history).

    --
    I can assure you, the best way to get rid of dragons is to have one of your own.
    1. Re:No DOOM? by Roguelazer · · Score: 2, Funny

      "I think there is a quantum world market for maybe five computers."

  44. Schrodinger's computer by Belseth · · Score: 4, Funny

    If it runs Windows does that mean it can be both in a crashed state and an uncrashed state?

    1. Re:Schrodinger's computer by vivtho · · Score: 1

      Mod parent up please. (+1 Funny)

    2. Re:Schrodinger's computer by Anonymous Coward · · Score: 1, Funny

      It can run linux and macos and windows at the same time.

    3. Re:Schrodinger's computer by Anonymous Coward · · Score: 0

      Have you considered that it might be all the free/open-source software you are trying to run and not Windows? It seems that the one commercial program you mentioned runs fine, so it is a possibility.

    4. Re:Schrodinger's computer by Belseth · · Score: 0, Offtopic

      Sorry, Open Office is the only free or open source I use. I have a small fortune in licensed software. I'm slowly switching to Mac and eventually Linux for rendering. I'd jump ship almost entirely but there's still some Mac support issues for hardware rendering and video cards in Maya. That'll get resolved later this year and I can start switching the render farm over once I sort out the driver issues to get it on Linux. I loose far too much time to WIndows crashes and it just hasn't gotten better. I use good motherboards and video cards so it keeps coming back to Windows. I've even tried different brands of ram with no effect. It's easy for the vendors and Microsoft to point fingers at each other but at the end of the day crashing multiple times a day let alone multiple times an hour is simply unacceptable.

    5. Re:Schrodinger's computer by cortana · · Score: 1

      Any operating system that allows software running on it to cause it to crash is broken.

    6. Re:Schrodinger's computer by Anonymous Coward · · Score: 0

      You clearly don't know anything about the quality of proprietary (what you call "commercial") software. A lot of the stuff I've seen the source code to is *fragile*, or at best, on par with open-source software.

    7. Re:Schrodinger's computer by jakupovic · · Score: 4, Funny

      Dude have you thought about replacing yourself, I mean 4 computers can't be wrong

      just a thought

      --
      You always point your finger at the bad guy, but what if the bad guy points his finger at you?
    8. Re:Schrodinger's computer by drgonzo59 · · Score: 2, Interesting

      Agree. I would even go futher and say that even some drivers should not be able to crash the operating system. If some idiot at Microsoft wrote my PS/2 mouse driver or some contractor monkey wrote a buggy graphics driver -- it shouldn't bring down the whole machine, but rather the machine should be able to detect a problem and restart the driver and the device or try to autmatically fall back to use a generic failsafe driver. I would want to have a good free OS with a separation kernel and userspace drivers. Sorry but Minix and Hurd just don't cut it yet. I remember the Andrew Tanenbaum vs. Linus debate over the best kernel architecture, and while back in the early 90's on a 33 MHz 386 processor context switches between drivers would have been too prohibitive, today with the 3GHz CPUs and gigabit memory bandwidths, it might just work. Some people will agree to sacrifice %15 or so of performance to increased reliability and fault tollerance. Even without any specific changes in programming practices going from 5,000,000 lines of code that could potentially run in priviledged mode to only 5000 would make a HUGE difference in terms of stability and fault tollerance. Who knows, maybe it's time to rethink?...

    9. Re:Schrodinger's computer by cortana · · Score: 1

      Your OS can be as compartmentalised as you want, but it still has to make do with whatever crappy hardware it's running on. If a badly written driver wedges the video card, you're going to have to restart, regardless of whether the microkernel restarts the driver or not. :)

    10. Re:Schrodinger's computer by Anonymous Coward · · Score: 0

      It works on my computer stop looking and maybe it will work on yours!

    11. Re:Schrodinger's computer by drgonzo59 · · Score: 1
      Well, that is sort obvious. Bad hardware can always crash the system.

      But I would think the people who want a compartmentalized OS would also be the ones to get reliable and certified hardware. And I think in some cases it would be possible for the OS to actually compensate for some hardware flaws - think of hard drives. Even as you look at this page, your hard drive head could have probably mis-read one of the bits from the platter but the _software_ in its controller corrected the mistake and you didn't even notice that anything happened. Here is the case where the hardware was designed to fail gracefully and the software was designed to cooperate with it and correct the problem.

      In case of a video card, if it fails (say performing some exotic 3D shading operation) but in a non-fatal way, such that the processor can still re-initialize it, then the separation kernel can choose a generic default driver that uses only the minimal subset of features (think VESA) and will re-initialize in that mode, so you would still see the console prompt and the network would still be up. Maybe the application that was trying to do the rendering might have to quit but the rest of the machine would be usable. These kind of requirements are not easy to justify for home desktops but for medical equipment, airplanes, military application it is very useful.

      Check the INTEGRITY 178B from Green Hills for a commercial example of such a system.

    12. Re:Schrodinger's computer by Z34107 · · Score: 2, Interesting

      I'm trying to edit something on a windows system right now and it crashes four to five times an hour

      Ever consider it's not Windows' fault? I dual boot Windows XP and Windows Server 2003 R2. Granted, I used to get occaisional crashes playing games in XP - until I disabled the Realtek integrated sound chip and got an Audigy.

      The only crashes I ever get are when I'm using beta nVidia graphics drivers, or when I make a stupid programming mistake, like off-by-one errors or checking pointers. The latter happens rarely, due to my incredible programming skill :D, and is caught by my IDE and never affects system stability. All in all, when I have programming classes, call it less than 4 crashes a month.

      I'm still trying to find out what people do to their poor machines in order to make them so horribly unstable, or what people do to their e-mail accounts to get so much spam. (I've had a free netscape account since I was 11 - never any spam.) Maybe it's not Windows?

      Oh, wait, this is Slashdot.

      --
      DATABASE WOW WOW
    13. Re:Schrodinger's computer by neomajic · · Score: 1

      It's called "pR0n".

    14. Re:Schrodinger's computer by ToxicBanjo · · Score: 2, Funny

      New marketing slogan for the year 2020 -


      "Windows Celesta 2020 - 100% Secure and Stable !!

      By using new and improved quantum hardware interfaces, QuantumSoft (formily MicroSoft) have engineered the absolute finest example of "Non Viewership". By never opening the box to see if the cat is dead QuantumSoft can say with 100% certainty that Windows Celesta 2020 will never crash and never be compromised."

      Fine print at the bottom -

      Void to those who actually determine the quantum state of Windows Celesta 2020 at anytime.

      --
      There are only 10 kinds of people in the world. Those that understand binary and those that don't.
    15. Re:Schrodinger's computer by BungoMan85 · · Score: 2, Informative

      That's pretty much how it is for me too. I run Windows XP and it NEVER crashes unless it has to do with graphics card drivers (I updated my drivers for my nVidia card and now Doom 3 causes auto reboots... lame). Seriously though, I think people who make Windows NT/2K/XP crash more than a few times a year are probably doing something really dumb. I don't even see how that is possible. Now on Windows 9x.... man... if you can get a system running that to stay up more than two days you are lucky.

      No, I'm not an MS appologist. I just don't ever have any problems with Windows cause I'm not dumb.

      --
      Bungo!
    16. Re:Schrodinger's computer by Anonymous Coward · · Score: 0

      Yes... and no.

    17. Re:Schrodinger's computer by Anonymous Coward · · Score: 0

      Only if you're not using it at the time. As soon as you start using it you'll truly never know.

    18. Re:Schrodinger's computer by lisaparratt · · Score: 1

      No.

    19. Re:Schrodinger's computer by scumbaguk · · Score: 1

      To a degree this already happens, ATI have the VPU recovery option in their drivers which restart the graphics VPU upon an error. I'm sure nvidia have something similar.

    20. Re:Schrodinger's computer by Anonymous Coward · · Score: 0

      The guy is basically trying to claim that win 2000 / XP / 2003 crashes four to five times per hour, regardless of the hardware or drivers used. OK, this is slashdot and I understand the nice aspects of linux and all, but why do so many people (now including me) feed the troll? The Windows NT family, especially 2000 and XP are pretty solid and descent operating systems, and really fucking hard to crash - if you don't have faulty hardware. I've had XP Pro stay up for 3 months easily (while doing everything from running a web server, to playing hardware-intensive games, raytracing, coding, watching pr0n etc.), and it would have been longer if windows software wouldn't be plagued by the 'you need a reboot for shit to work' disease.

    21. Re:Schrodinger's computer by m50d · · Score: 1

      I do the same things to the same machine under both linux and windows. And it crashed about twice an hour under win98, less now that I've replaced that with 2k but it's still a noticeable rate of crashing, wheras I have never had a full crash (worst thing to happen was X dieing and taking my screen with it, but I was able to ssh in and use the machine fine, though all I did was reboot) under linux.

      --
      I am trolling
    22. Re:Schrodinger's computer by freedom_india · · Score: 1

      Try Mac OSX. It works that way.

      Windows Kernel loads your drivers into the Kernel Space (where all MSFT code and all contractors' code runs together in ONE memory space). How do you think they manage to run so far even on a 128 MB RAM machine?

      Win NT 3.5.1/3.5.3 had separated [video] drivers from kernel and made them run in User Mode. That is why it was last stable version of NT.

      We installed NT 3.5.3 on one of our boxes and XP on another for our testing purposes and whatever we threw at 3.5.3 did not make it crash. It operated slowly, granted, but never crashed, except for once when we changed BIOS settings.

      --
      "Doing what i can, with what i have." ~ Burt Gummer
    23. Re:Schrodinger's computer by Kitsune78 · · Score: 1

      "free netscape account since I was 11 - never any spam.)"

      We've told you to please stay off /., Dvorak.

    24. Re:Schrodinger's computer by Nazmun · · Score: 1

      I was gonna suggest something similar =P. From what i've seen the in the last few years from experience on my windows machines, work machines, and that of numerous family members and friends, the primary reason for win xp and 2k to crash is hardware driver issues.

      After that would be having over 20 pieces of spyware/adware/malware on your computer and perhaps even some viruses.

      I personally run a pretty clean and hardware intensive (for the hardware it operates on) operation on my primary machine at home. I'll usually have at least 5 programs on. Photoshop like the grandparent, usually dreamweaver or some ide for coding, a browser, and usually a media player.

      I've managed to slow down my machine to a crawl at times whelst having numerous things on and transfered mult-gig video files but I've never had it crash since all the drivers were fixed over 2 years ago. Infact i've had the god damn machine on and haven't restarted it for over a month. I've had it running over 2 months at some point.

      The difference in stability in win nt/2k/xp is from the win9x series is amazing.

      --
      Hmmm... Pie...
    25. Re:Schrodinger's computer by default+luser · · Score: 1

      Microsoft moved the video drivers into the kernel simply because, when NT 4.0 was released, speed was essential, and hardware was barely able to meet the needs of workstation users without the additional slowdowns of user-mode. Video card manufacturers responded to the call by making more stable video drivers for NT than their Win9x counterparts.

      Unfortunately, Microsoft didn't remember WHY they put the video drivers in kernel space. The let Windows 2000 and Windows XP ship with the drivers in the kernel, even though performance was more than enough to move the driver back to user space.

      But now, Microsoft is finally doing what they should have done with Windows 2000: Vista will move drivers back into user-mode, and I expect stability will improve dramatically. Hey, better late than never.

      --

      Man is the animal that laughs.
      And occasionally whores for Karma.

    26. Re:Schrodinger's computer by drinkypoo · · Score: 1

      The difference in stability from Windows NT 3.51 to Windows NT 4.0 was pretty amazing too, but in that case, it went down.

      The difference in stability between Win9x and WinNT actually isn't amazing considering that NT makes proper use of protected memory.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    27. Re:Schrodinger's computer by mdman · · Score: 1

      What hardware do you have? I have never seen a crash in the 8 PC's I currently run.. with graphic and coding software. I suspect its your hardware configuration more than anything else.

    28. Re:Schrodinger's computer by Anonymous Coward · · Score: 0

      The difference in stability in win nt/2k/xp is from the win9x series is amazing.

      I agree. I also generally leave my system running 24/7.
      The main reasons why my systems crash have to do with
      poor drivers from obscure/unsupported hardware, hardware
      failure (ie: failing drives), And to a small degree,
      spyware/malware. I'm strict about what goes onto any machine
      of mine, be it running Windows, Linux, or other, but I do
      repair quite a few machines for friends and family.

      As far as stability in a microsoft operating system, you still can't beat MS-DOS, and, personally, the worst OS I've used had to be Windows ME. I kept ME on a computer for about a month, before that machine received a format.
      I have no problems with stability on XP, aside from the obscure/unsupported hardware.

      As a side note, it's rather funny how OS/2 Warp(ed) ran Windows 3.1 better than MS-DOS did. ;)

    29. Re:Schrodinger's computer by Anonymous Coward · · Score: 0

      If it runs Windows does that mean it can be both in a crashed state and an uncrashed state?

      Yes, although you won't find out which until you try to save.

    30. Re:Schrodinger's computer by silverkniveshotmail. · · Score: 1
      Any operating system that allows software running on it to cause it to crash is broken.
      Linux is therefore broken.
  45. Uncertainty principle by JabrTheHut · · Score: 1

    Uncertainty principle: You either know what speed your computer runs at, or where it is, but never both at the same time.

    --
    Work like no one is watching. Dance like you've never been hurt. Make love like you don't need the money.
  46. State names by Intellectual+Elitist · · Score: 1
    > "For example, an up-spin can represent a one, or a down-spin can represent a zero -- or the qubit can occupy both states simultaneously"

    So what are the state names, "tea", "no tea", and "intelligent"...?

  47. Moore's Law for Quantum Components? by sanman2 · · Score: 1

    Will there be a Moore's Law for the quantum components (ie. the ions)?

    Suppose we start off with 8 qubits, then how long will it take us before we get to 16, and then 32, etc?

    How many qubits would you have to get upto, in order for a quantum microchip to catch on for mainstream business and consumer applications?

    1. Re:Moore's Law for Quantum Components? by robertjw · · Score: 1

      Probably depends on x86 compatibility requirements.

    2. Re:Moore's Law for Quantum Components? by centie · · Score: 1

      There is actually an intristing quantum corollary to Moores law..

      If you simulate a quatum system on a classical computer (which is possible, if inefficient), then add a single new degree of freedom (qubit). This requires doubling the (classical) memory to hold the state of the entire sytem. A quantum computer, obviously, only requires a single qubit added.

      So if a single quibit is added to a quantum computer every two years, then it will keep up with classical computing doubling its power (Moores law), atleast for quantum problems (which is all anyone is proposing running on them).

    3. Re:Moore's Law for Quantum Components? by John+Meacham · · Score: 1

      the interesting thing is that quantum systems scale superlinearly with the number of qubits relative to standard computers.

      so if we assume vanilla computers double in power every year, in order for quantum computers to keep up, one needs only to produce a quantum computer with _one_ more qubit every year.

      of course, there is some subtly in the meaning of 'keeping up' since the problems practically solvable by each are different so you can't compare them directly, but you can compare their growth in power over time, which is what moores law is about.

      --
      http://notanumber.net/
    4. Re:Moore's Law for Quantum Components? by sanman2 · · Score: 1

      Wow, thanks for that guys, I never really considered that. Okay, but the original Moore's Law is based mainly on the ability of manufacturing/engineering to come up with the transistor density doubling every year, rather than being driven by market demand. So then suppose industry is able to keep doubling the number of qubit ion components every year? Then we get some kind of exponential curve for performance improvement? Does this mean all that Kurzweil singularity stuff can happen due to the exponential acceleration provided by Moore's Qubit Law?

    5. Re:Moore's Law for Quantum Components? by ichigo+2.0 · · Score: 1

      This requires doubling the (classical) memory to hold the state of the entire sytem. A quantum computer, obviously, only requires a single qubit added.

      To double the amount of binary memory, you also add a bit. I don't think one can compare Moore's law with the amount of qubits (nevermind that Moore's law is about transistors, but I'm going with the popular interpretation here), because a quantum computer already has unlimited power as it is capable of calculating all the combinations at once. The amount of qubits is a better match for the amount of ordinary memory, and as I said it also doubles with the addition of a bit. When a computation is run on a quantum computer, the universe splits into a number of parallel universes, in which every quantum computer does a single calculation with a different value, and then all the different computers "share" the result. So it's essentially a massively parallellized computer, with all the nodes being in different universes, thus resulting in a quantum computer already having unlimited power. I'm going with the many worlds interpretation here, but I'm not a quantum physicist so someone correct me if I'm wrong.

    6. Re:Moore's Law for Quantum Components? by ichigo+2.0 · · Score: 1

      D'oh, what was I thinking when I wrote the post, obviously binary memory doesn't double with an additional bit, it's the binary number that does. But I stand behind the rest of the post and think that Moore's law or something similar doesn't apply to QCs. I just woke up, so hopefully my previous post's glaring error is excused. :)

  48. Should be just in time... by optkk · · Score: 3, Funny

    for the next Duke Nukem Forever.

  49. Finally, by Anonymous Coward · · Score: 0

    a computer small enough to smallow!

  50. ladies and gentleman by Anonymous Coward · · Score: 0

    prepare to recompile your binaries yet again. steve jobs - 2010

  51. Re:uh oh... (relax) by sinewalker · · Score: 1
    No. QC leads to the death of DRM, since a QC can theoretically crack a hard problem (finding prime factors) very quickly. Since hard problems with trapdoors are the basis of all encryption algothims today, DRM based on encryption becomes crackable with a QC, unless mathemagicians can find a problem so hard that it can't be cracked by brute force, even given an infinite time to do it in...

    QC = the end of encryption as we know it, not the start of amazingly uncrackable codes.

    Probably what will happen is that only the spooks can have a QC (like with Cray computers, which must be destroyed when decomissioned, to prevent falling into the "wrong" hands). Unless a way can be found to build a viable QC in the back yard...

    --
    “Our opponent is an alien starship packed with nuclear bombs. We have a protractor.” — Neal Stepnenso
  52. nuts.wad by Neo-Rio-101 · · Score: 1

    ...and I wanted to benchmark nuts.wad on it!

    --
    READY.
    PRINT ""+-0
  53. Huh? by scdeimos · · Score: 0, Redundant
    From TFA:
    "The cadmium atom that has lost an electron becomes a negatively charged ion, which can then be controlled with an electrical field," said Daniel Stick, a doctoral student in the University of Michigan's physics department who participated in the work.
    It's been twenty years since I've done chemistry but last time I checked losing an electron causes an atom to become positively charged - it would have to gain an extra electron to become negatively charged. So is this a typo, or has Quantum Physics turned everything on its head, including Electronic Principles?
  54. Wait until the news corps get ahold of this by addictedavi · · Score: 1

    I personally can't wait until Fox or CNN reports this, launching into a very dumbed-down, 20 second summary of the past 80 years of physics. Cover your eyes, Jimmy...

  55. Enigmatic? by SIGFPE · · Score: 1

    This enigmatic feature of quantum mechanic...

    What is enigmatic about adding two vectors in a vector space? I can't stand the way popular science press insist on making bizarre statements about the most trivial mathematics and science in an attempt to make it more interesting. States in a quantum computer are elements of a vector space. You learn what vector spaces are in the first year of an undergraduate course in mathematics. This is baby stuff. It's hard to realise physically but the underlying ideas are easy. This endless mystification is getting very annoying. Among other things it generates endless verbiage on /. where people have to keep clearing up other people's descriptions of what qubits are. This stuff isn't mysterious. I think it's time to write an idiot's guide to quantum computing.
    --
    -- SIGFPE
    1. Re:Enigmatic? by bhaberman · · Score: 2, Interesting

      It's enigmatic because while these vectors are eigenfunctions of the Schroedinger equation, meaning that they represent a definite state, the sum of these two vectors is NOT an eigenfunction. It is weird that a particle simply walks around with a state not corresponding to any definite eigenstate. It is also weird that when you try to catch the particle in the act, the particles state collapses to that of one of the eigenstates of which it is in the superposition, with probability given by taken the scalar product with the eigenstate in question. This means that when not being measured, particles evolve according to the (deterministic) Schroedinger equation, while when the particles are measured they (randomly) perform a quantum leap into just one eigenstate, and then continue on their Schroedinger evolution.

      This is
      a. Counterintuitive. How can these particles walk around with indefinite states?
      b. Disturbing. How does measurement make them choose a state; what is the privilidged status of measurement in the universe; does it have a true state?
      c. Mathematically sophisticated. The details of quantum mechanics require infinite-dimensional Hilbert space theory, much of which has been developed during the 20th century. Things like the spectral theorem are mathematically very difficult and are necessary for quantum mechanics. It is not true that people learn what a Hilbert space is in the first year of undergraduate mathematics. Hey, even people in their senior year of college might not know what it is, let alone how to use its properties.

      Don't say quantum mechanics is simple. It is one of the strangest theories ever developed by science, and should be thrown out altogether as ridiculous, if it weren't for the fact that it explains observations very well.

    2. Re:Enigmatic? by Anonymous Coward · · Score: 0

      Here's a hint, when was the last time you heard "vector spaces" uttered on prime time TV outside of some technobable? The audience for quantum computing is less than the 10% of people who even know what a vector space is, and the rest of the people just like blurbs that might make them think they're getting flying cars soon.

    3. Re:Enigmatic? by fizzyabbo · · Score: 1

      Most of what you say about quantum mechanics is true; it is complicated. However, it is not unusual for the media to try to make a leading edge area of research seem impossibly difficult to comprehend with (sometimes inaccurate) sensationalist hyperbole.

      That being said, it isn't impossibly difficult to learn a bit about quantum mechanics, and the fact is that you only need to know a little linear algebra to make some sense of it.

      In addition, quantum computing is especially elegant (at least in theory) because the defining property of qubits is that their state space is hopefully restricted to a two-dimensional Hilbert space. This makes the analysis simpler. For a good read, grab the de facto bible of quantum information by Neilsen and Chuang "Quantum Computation and Quantum Information" which spells out a sufficient amount of quantum mechanics in the first chapter to support you through the rest of the book.

    4. Re:Enigmatic? by wass · · Score: 1
      Dammit, I had a huge in-depth reply with lots of wiki links, and I accidentally killed the tab! Well, here's a quick re-do, but I'm not going to spend as much time.

      What is enigmatic about adding two vectors in a vector space?

      Nothing about adding vectors. However - qubits are NOT vectors, they're representations of SU(2) algebra.

      States in a quantum computer are elements of a vector space. You learn what vector spaces are in the first year of an undergraduate course in mathematics. This is baby stuff.

      No, this is very wrong, it's not simple vector space, it involves group theory, specifically that of Lie Groups. Additionally, spin states aren't in a vector space, but in a Hilbert Space.

      basically - a qubit is a two-element spinor, each element is a complex number, so that leaves four independent terms. However, the whole spinor must be normalized, and additionally there's an overall phase that's meaningless. So that leaves only two free parameters which completely describe the qubit. And these parameters can be transformed such that they lie nicely on the surface of a sphere, known as the Bloch Sphere. I assume that's what you mean when you are talking about qubits as vectors. but that only works for individual vectors, it completely breaks down when dealing with systems of vectors because it ignores the entanglement between multiple qubits!

      However, any elementary student of quantum mechanics learns quickly that spin, which is an embodiment of angular momentum, has individual components that DO NOT COMMUTE. Basically - a quantum vector would allow you to simultaneously know the x,y, and z components. Not true with angular momentum, you can only know something about the overall length of the vector and the component of the vector on only ONE dimension. Therefore, any angular momentum in quantum mechanics is really pointing somewhere on a ring of uncertaintly along a sphere.

      Now, when you look at a system of two spins, and qubits can be represented as spin-1/2 system, you must use the Clebsch-Gordon coefficients to add them. Angular momentum addition is actually an esoteric topic. It is straightforward once you learn it, but it's definitely not as straightforward as adding two vectors.

      So, two qubits, or two spin-1/2 particles (eg electrons) can be put in a combined system in many ways. The eigenstates of an individual qubit would be up and down, but it turns out you cannot simultaneously know the up/down of the two qubits in the total system, OR you cannot know the total spin. So - you have four eigenstates of TOTAL SPIN that are a spin-zero system (the l=0 spin singlet ) or the triply-degenerate l=1 spin-one system (the spin triplet). In the singlet state, there is only m=0, but the triplet can have m=+1, 0, or -1. Remember these quantum numbers from high-school chemistry? However, if you know you have a triplet, you cannot know the directions of the individual spins (unless you're in the state of both UP or both DOWN).

      So basically, this is a bit more enigmatic than common-sense will dictate, and it's certainly much more complex (in the mathematical sense too) than simple vector mathematics.

      --

      make world, not war

    5. Re:Enigmatic? by SIGFPE · · Score: 1

      No, this is very wrong, it's not simple vector space, it involves group theory, specifically that of Lie Groups. Additionally, spin states aren't in a vector space, but in a Hilbert Space.

      I won't respond to all of this post. You clearly are unfamiliar with quantum mechanics and are just throwing around keywords to sound impressive. I'll just respond to this sentence. Your other sentences are just as much BS.


      "It involves group theory". Clearly you don't know how or you wouldn't just say "it involves". The fact is, you can build up the theory of quantum computing without bringing in group theory. In fact, you need to know next to nothing about group theory to understand what a qubit is. An isolated qubit is represented by a 2D (complex) vector space. Where does the group theory come in? Read Shor's paper on factoring numbers. There's no special use of group theory above and beyond what you need to understand to do basic number theory and that applies just as well to classical factoring algorithms.


      "spin states aren't in a vector space, but in a Hilbert Space" And now you're really making a fool of yourself. All Hilbert spaces are vector spaces. Infinite dimensional Hilbert spaces are interesting because the definition of "Hilbert space" requires it to be complete wrt its norm. Now every quantum computer I've ever seen discussed has states in a finite dimensional vector space. So completeness holds trivially. We're just dealing with ordinary vector spaces with norms.


      And God only knows why you're lecturing me on Clebsch-Gordan coefficients (note the spelling BTW), interesting as the subject is. The representation of SU(2) really isn't very important to quantum computing and I've certainly never met any quantum algorithms that make use of intertwiners.


      As far as I can see you're just part of the grand conspiracy to make Quantum Mechanics, and especially Quantum Computing, seem far more mysterious than it is. Shame on you.

      --
      -- SIGFPE
    6. Re:Enigmatic? by SIGFPE · · Score: 1
      I won't deal with everything you say but pick just one paragraph



      Mathematically sophisticated. The details of quantum mechanics require infinite-dimensional Hilbert space theory, much of which has been developed during the 20th century. Things like the spectral theorem are mathematically very difficult and are necessary for quantum mechanics. It is not true that people learn what a Hilbert space is in the first year of undergraduate mathematics.

      You can understand qunatum computing without infinite-dimensional Hilbert spaces (because quantum computers, at least the ones I know, live in finite-dimensional vector spaces, and plenty of interesting non-trivial quantum systems are finite-dimensional), you don't need the spectral theorem when dealing with finite dimensional systems, vector spaces are first year material even if Hilbert spaces aren't, and you don't need the full machinery of Quantum Mechanics to do Quantum Computing anyway.
      --
      -- SIGFPE
    7. Re:Enigmatic? by wass · · Score: 1
      I won't respond to all of this post. You clearly are unfamiliar with quantum mechanics and are just throwing around keywords to sound impressive.

      At first I thought you were trolling, and you gave me a good laugh. After responding to this, my conclusion is that you know some quantum computing stuff, but you really don't have a decent understanding of the underlying quantum mechanics.

      An isolated qubit is represented by a 2D (complex) vector space. Where does the group theory come in? Read Shor's paper on factoring numbers.

      Okay, don't just take my word for it. Take a look at this book . Notice in the description it says "A group theoretic abstraction of Shor's algorithms completes the discussion of algorithms." Want another example? This course specifically teaches some group theory before getting to the quantum algorithms.

      You suggested in your first post that any system of more than one qubit merely involves 'adding' their vector spaces. Ie, you said this

      "What is enigmatic about adding two vectors in a vector space? I can't stand the way popular science press insist on making bizarre statements about the most trivial mathematics and science in an attempt to make it more interesting."

      Okay, please demonstrate how to form the spin-singlet state by _adding_ the vectors of the two individual spinors. Now explain how to form the m=0 spin-triplet state by again adding the vectors of the two spinors. You cannot do this with 'baby stuff' arithmetic as you insinuated in your original post.

      Ie, you're increasing the size of your Hilbert space, so it's not basic addition at all. You would be right if you said both could be formed as a linear combination of two individual up/down and down/up states. But each of the individual states themselves is a spinor, so by 'combining' these two states. you're not doing simple 'vector addition'. You are actually dealing with tensors, and group theory, only you're not realizing it. And while this might be relatively simple for two qubits, once you add many qubits to the system the complexity increases quickly.

      In fact, you need to know next to nothing about group theory to understand what a qubit is. An isolated qubit is represented by a 2D (complex) vector space. Where does the group theory come in?

      You're right that an isolated qubit can be represented by a two-element spinor. The group theory comes in for systems with multiple qubits. Here's a quick explanation for a two-qubit system. For reasons I explained in the original post, there are only two free parameters, hence an easy Bloch Sphere representation, for one qubit. Two qubits together, however, have SIX free parameters (the overall system state has four complex elements, but it's normalized and also has a meaningless phase). How do you take two qubits with two degrees of freedom, and combine them to get a system with six degrees of freedom? The combination itself is NOT simple vector addition, because you cannot merely _add_ two qubits together. The description of where the extra degrees of freedom come from when combining two qubits is described by the group theory. Or you can talk about from a tensor point of view by including irreducible tensors, etc.

      As far as I can see you're just part of the grand conspiracy to make Quantum Mechanics, and especially Quantum Computing, seem far more mysterious than it is. Shame on you.

      Coupled systems ARE enigmatic, and I'm sure you've heard of EPR and Bell's Inequality. If you think it's "baby stuff", then you seem to be one of those scientists that just follow through calculations 'plug-and-chug', without any comprehension of the underlying concepts.

      So as I said previously, at first I thought you were trolling, but I now think I understand where you're coming from. I guess in your experience

      --

      make world, not war

    8. Re:Enigmatic? by SIGFPE · · Score: 1

      At first I thought you were trolling, and you gave me a good laugh.

      You know about the Bogdanov brothers, right?

      my conclusion is that you know some quantum computing stuff, but you really don't have a decent understanding of the underlying quantum mechanics.

      No, I understand the quantum mechanics quite well but you don't need the full power of quantum mechanics to do quantum computing.

      Okay, don't just take my word for it. Take a look at this book . Notice in the description it says "A group theoretic abstraction of Shor's algorithms completes the discussion of algorithms."

      Yes, because factoring integers involves group theory. In particular the integers modulo N form a group and modular arithmetic is pretty crucial to most factoring algorithms, including Shor's algorithm. But this is entirely separate from the usual use of group theory in quantum mechanics: studying the symmetry of physical systems. You don't need any of that Lie group and Lie algebra stuff to understand Shor's algorithm but you do need it to do particle physics, say, because when we study Shor's algorithm we're not studying symmetries of the system.

      Okay, please demonstrate how to form the spin-singlet state by _adding_ the vectors of the two individual spinors.

      You don't need to do this to understand quantum computing. To combine two spinors you look at the tensor product. Tensor products are the hardest bit of linear algebra in quantum computing, though they're obfuscated in many texts to make them seem even harder. But you're doing something in addition to forming the tensor product. You're considering a qubit to be an element of the 2D, spin-1/2 irrep of SU(2) and when you form the tensor product your're writing it as the sum of the spin-0 and spin-1 irreps (shorthand: 2*2 = 1+3). You need to do this to understand the total spin of the combined system. But this has nothing to do with quantum computing. In quantum computing you don't care what the total spin of the system is. In fact, you don't need to represent qubits using spin at all. You could use any pair of basis vectors you can physically construct. The vectors might represent energy levels of atoms or choices of wavefunction and have nothing to do with spin. So your talk of SU(2), while all very beautiful, has nothing to do with quantum computing. Combining two qubits is easy. The rule is
      |a>*|b>=|a,b>.
      The combined state has basis {|0,0>,|1,0>,|0,1>,|1,1>}. Eg. (|0>+|1>)*(|0>-|1>) gives (|0>+|1>)(|0>-|1>)=|0,0>+|1,0>-|0,1>+|1,1>. Easy peasy lemon squeezy.

      Ie, you're increasing the size of your Hilbert space, so it's not basic addition at all.

      Yes, it's multiplication. When you combine two quantum systems you multiply, not add. You don't need to know any group theory to do this. You just need to understand that a basis of the combined system is formed by taking pairs of basis elements, one from each system.

      And while this might be relatively simple for two qubits, once you add many qubits to the system the complexity increases quickly.

      Only if you're trying to compute the total spin of a combination of lots of qubits represented by spin. This has little to do with quantum computing.

      Or you can talk about from a tensor point of view by including irreducible tensors, etc.

      Yes, all very interesting, and nothing to do with quantum mechanics. You must be a particle physicist or something.

      then you seem to be one of those scientists that just follow through calculations 'plug-and-chug', without any comprehension of the underlying concepts.

      Funny, I was thinking the same about you. I think you need to stop and think about why you're so hu

      --
      -- SIGFPE
    9. Re:Enigmatic? by SIGFPE · · Score: 1

      I said I'd follow up. I found this paper on exactly what I was talking about. Note that the reference to Clebsch-Gordan is in a footnote because this is offtopic in quantum computing, and note that it appears in this paper because it is specifically about realising reliable qubits in physical systems based on spin. Clebsch-Gordan coefficients are in no way fundamental to understanding quantum computing, but may be useful for people actually building quantum computers (just as you can be an expert in classical computer science without understanding transistors).

      --
      -- SIGFPE
    10. Re:Enigmatic? by SIGFPE · · Score: 1

      Here's a hint, when was the last time you heard "vector spaces" uttered on prime time TV

      Here's another hint: when was the last time you heard "finite element methods" uttered on prime time TV? Yet nobody says that bridge building is "enigmatic". There is a deliberate conspiracy of mystery surrounding quantum mechanics.
      --
      -- SIGFPE
    11. Re:Enigmatic? by wass · · Score: 1
      No, I understand the quantum mechanics quite well but you don't need the full power of quantum mechanics to do quantum computing.

      Okay, we're in total agreement here. The whole point of my reply was because in your original post you said there's nothing enigmatic about quantum mechanics, and that adding qubits is trivial. I disagree with both those statements. Granted, the quote you replied to in your original quote says "quantum mechanics" but the rest of your post deals primarily with quantum computing.

      However, I still disagree with you that it's trivial to add qubits, which is mathematically equivalent to adding angular momentum. Like I said, a two-qubit case is relatively simple, but things get much more complicated in higher-order systems. Maybe such higher-order systems aren't as prevalent in quantum computing, so perhaps such topic doesn't need to be known in depth for most quantum computing algorithms.

      when you form the tensor product your're writing it as the sum of the spin-0 and spin-1 irreps (shorthand: 2*2 = 1+3). You need to do this to understand the total spin of the combined system. But this has nothing to do with quantum computing.

      Okay, you basically proved my point, with your tensorial shorthand of 2x2=1+3. That is not simple vector addition, at least not in my book.

      Perhaps we differ in outlook in that you regard such a tensor product as 'baby stuff', as per your original post, whereas I think it's not as trivial. In that regards we can just leave it that you're much smarter than me if you consider tensor products as simplistic math. But again, this simple 2x2 case is fairly easy, and if this is as difficult as things get for most quantum computing routines, than you're right this isn't that much of a big deal.

      But things are more complicated in general, such as in physical angular momentum rotations, which are important in rotational and atomic systems, where IIRC O(3) operations can lead to 3x3=5+3+1 irreducible forms, and can yield nifty tricks like the version of Wigner-Eckart for a closed surface integral containing the product of three spherical harmonics. But again, I guess such techniques aren't useful in quantum computing.

      You must be a particle physicist or something.

      Condensed matter experimentalist, currently working with mesoscopic transport and superconducting nanowires. What is your field of research?

      But we're not looking at multiple-spin systems. You're going off at a tangent. None of the basic quantum computing algorithms (Shor's algorithm, Grover's algorithm etc.) make any reference to combining spin.

      But I disagree, and you did demonstrate this earlier with your 2x2=1+3. That IS a multiple-spin system, and it DOES deal with Clebsch-Gordon coefficients, just the most simplistic ones there are. AFAIK, the controlled-not is one of the most fundamental gates in quantum computing, and that does deal with two-qubit systems, in which case the level of entanglement is built into the 4-element complex state.

      And the reason I keep bringing up Clebsch-Gordon is merely to demonstrate, which apparently you DO understand, the concept that adding angular momentum isn't quite trivial as it would appear at first glance. At least not to me. And since qubits ARE representations of SU(2) algebrea, and are synonymous with a spin-1/2 particle, it is valid to talk about them from this point of view.

      But granted I'm not as familiar with that many theorems of quantum computing, especially any error-correcting. But I know that quantum teleportation requires the spin-singlet state, in which case entanglement IS quite important. Perhaps this routine isn't really considered within the scope of quantum computation? Additionally, I also thought some quantum computing routines are possible because they can effectively circumvent the no-cloning limitation by using entanglement as a means to build in some kind of redundancy. But that's just a hand-wavy concept, maybe

      --

      make world, not war

    12. Re:Enigmatic? by SIGFPE · · Score: 1

      Okay, you basically proved my point, with your tensorial shorthand of 2x2=1+3. That is not simple vector addition, at least not in my book.

      This gives no insight into quantum computing, it's about spin. Spin can be a bit tricky. But classical angular momentum is tricky too. How many people can predict the outcomes of this experiment? And yet it's entirely predictable from some intuitively simple ideas like F=ma. Same goes for quantum computing and quantum mechanics: there are hard problems in these fields but you can get started in both without dressing it up in mysticism and enigma.

      And since qubits ARE representations of SU(2)...

      Just about any vector space carries a representation of any classical Lie group. The reason to study the representation of a particular group is that the system has that group as a (possibly approximate) symmetry. But in quantum computers you're looking at systems that don't have SU(2) symmetry. The computer itself does, but the particular system of interest, with basis |0> and |1> doesn't. For example a NOT gate maps |0> to |1> so if you're representing bits by spin states you're not conserving angular momentum. Ie. the Hamiltonian for a NOT gate is not SU(2)-invariant. (The reason it's not conserving angular momentum is that the NOT gate is typically implemented by some piece of hardware that locally breaks SU(2) symmetry, eg, by using an external magnetic field with a particular orientation. You need to consider the Hamiltonian for the entire system - qubits plus magnetic field and other hardware to recover SU(2) symmetry. A computer scientist doesn't care about this other stuff, they just want to consider the qubits themselves.)


      And you don't need to understand SU(2) to understand entanglement. A state like |0,0>+|1,1> represents a pair of entangled bits and you can do interesting stuff with such a state without the need to understand SU(2). For example such a state is useful in quantum teleportation. Understanding quantum teleportation requires nothing more than understanding how a simple linear operator acts on a fairly small basis.


      BTW I'm not sure what methods you're referring to that use redundancy to work around the no-cloning theorem. Maybe you're just talking about quantum error correcting code. These don't really use redundancy but instead distribute qubits over several underlying qubits in places that the Hamiltonian for external interaction can't see them. Eg. you find some elements of the Hamiltonian matrix that are zero in some basis and smuggle the qubits into the corresponding space.


      BTW, what do you think of this applet

      When I get to a machine with Java installed. And I think I really need to write a Dummy's Guide to Quantum Computing some time...

      What is your field of research?

      Er...computer graphics for Hollywood, and though I work in an R&D group of a supposedly cutting-edge company I'd be embarassed to compare the 'R' in that to what you do!
      --
      -- SIGFPE
    13. Re:Enigmatic? by wass · · Score: 1
      Okay, I think we're in near agreement with the theory at this point, and just debating semantics.

      BTW, I re-read my original response to your first response, and it's bloody awful, no wonder you thought I was a fool. Like I said, I accidentally killed the tab, so I tried to whip up something quickly before missing too much of the Daily Show, and wound up mangling terms in my haste, eg vector space vs Hilbert space, etc.

      Basically I didn't agree with how you said combining two qubits together is simple vector addition, because as we've beaten to death by this point it's really tensorial, like a linear combination of two linear combinations, yada yada yada.

      I still disagree with you about quantum mechanics being more enigmatic than classical mechanics, but as you've said, most quantum computing routines don't require knowledge of group theory and only 'baby' tensor stuff. (Although if you want a good understanding of the actual quantum mechanics underneath, especially in regards to real physical systems such as the hydrogen atom, than those concepts become more important).

      That applet I linked to basically lets you choose any input qubit, operate on it w/ a number of gates (the Pauli gates, Hadamard, and some others), and see the resulting qubit, in real time. Displays both the spinor representation, as well as graphically on the Bloch Sphere, for both qubits. So you can see in real-time the effects of the various single-qubit gates on any qubit value. Granted there's not much useful stuff to do with only single qubits, but it's a start. I've got the two-qubit version in the works, haven't touched it in about a year.

      I've also debated such a 'dummy' quantum computing guide, becuase like you said, qubits aren't very difficult conceptually wise. In fact, that was part of my motivation in making these Java applets. If you're serious about working on this and would like to colloborate on something, send me an email at the address on the applet page.

      --

      make world, not war

  56. Mods missed the reference by jcuervo · · Score: 3, Informative

    At the end of every (?) episode of Quantum Leap, Sam (Scott Bakula) (and that holographic dude, once or twice) would say "Oh, boy" once he jumped into a new body and realized his new predicament.

    Can't believe the mods missed it. :-(

    --
    Assume I was drunk when I posted this.
  57. Negatively charged, from TFA by Anpheus · · Score: 0, Redundant

    "The cadmium atom that has lost an electron becomes a negatively charged ion, which can then be controlled with an electrical field," said Daniel Stick, a doctoral student in the University of Michigan's physics department who participated in the work.

    I know why he's a doctoral student--because I deserve a doctorate more than he does! There's a reason the notation for electrons is e-, not e+. Because when the atom loses an electron, it loses some negative charge... balancing it to the positive.

  58. he he he poor fools by Anonymous Coward · · Score: 0

    check it out.... the future is now.

    http://atomchip.com/

    lol.....

  59. Re:uh oh... (relax) by Anonymous Coward · · Score: 0

    actually, QC could potentially make provably perfect DRM. it is a physical impossibility to clone quantum data, so it truely is 'read once'. this is (in a simplified way) how quantum cryptography works, if anyone intercepts the message, there is no way for them to also pass on the unchanged message.

    of course, unless you are appreciating the finer fuzzies of the quantum characteristics of your copy of the matrix, "did you see how entangled those photons in that scene were! that was awesome!" then practically, this isn't all that useful for the sort of DRM the MPAA wants.

  60. Wired Sucks by PhysSurfer · · Score: 1

    How can you take that magazine seriously when they make statements like these?

    "Working with individual ions is key to building powerful computing machines that will exploit quantum physics -- instead of transistors

    Transistors exploit quantum physics! Transistors work because of the laws of QM - they were designed after the QM describing solid state objects was formlated. The classical analog is vacuum tubes.

    1. Re:Wired Sucks by bride_of_excession · · Score: 0
      How can you take that magazine seriously when they make statements like these?


      I agree. Remember the Wired article (IIRC in the 9/98 issue) feeding the y2k scare? Wired is not a reliable source of information.
  61. Uncertainty principle by SheeEttin · · Score: 0

    The uncertainty principle states that the more accurately you know a particle's position, the less accurately you can know its velocity, and vice versa.
    So, if you know wherethe particle is, you can't know how fast or in which direction it is spinning. Conversely, if you know which direction ond how fast it is going, you cannot know its position.

    This is going to be hell for data storage.

  62. The internet was predicted 60 years ago. by SETIGuy · · Score: 2, Interesting
    ... Remember research 50 years ago? Huge, vacuum tubes, hundreds of calculations a second (maybe). They thought the world would have maybe 5-10 computers. Who envisioned Doom, or the Internet?

    Actually, I'd say that in 1946 (yes, 60 years ago) Murray Leinster essentially predicted the internet. Although he didn't predict how it worked, he certainly predicted computers in the home searching centralized data repositories. Here's an excerpt from "A Logic Named Joe."

    You know the logics setup. You got a logic in your house. It looks like a vision reciever used to, only it's got keys instead of dials and you punch keys for what you wanna get. [...] Say you punch "Station SNAFU" on your logic. Relays in the tank take over an' whatever vision program SNAFU is telecastin' comes on your logic's screen. Or you punch "Sally Hancock's Phone" an' the screen blinks an' sputters an' you're hooked up with the logic in her house an' if somebody answers youve got a vision-phone connection. But besides that, if you punch for the weather forecast or who won today's race at Hialeah or who was mistress at the White House durin' Garfield's administration or what is PDQ and R sellin' for today, that comes on the screen, too. [...] Also it does math for you, an' keeps books, an' acts as consulting chemist, physicist, astronomer an' tealeaf reader, with an "Advice to Lovelorn" thrown in.

    Not too far off the mark for 1946.

    1. Re:The internet was predicted 60 years ago. by d474 · · Score: 1

      That was interesting and quite a visionary leap of imagination on behalf of that writer in 1946. He's pretty much got google figured out, eh!?

      --
      Authority questions you. Return the favor.
    2. Re:The internet was predicted 60 years ago. by Anonymous Coward · · Score: 0

      You forgot "But, when you can punch pr0n, the relays in the tank may vision program you "goatse" " which was perhaps the most amazing prediction of the time.

    3. Re:The internet was predicted 60 years ago. by conJunk · · Score: 1
      Say you punch "Station SNAFU" on your logic. Relays in the tank take over an' whatever vision program SNAFU is telecastin' comes on your logic's screen. Or you punch "Sally Hancock's Phone" an' the screen blinks an' sputters an' you're hooked up with the logic in her house an' if somebody answers youve got a vision-phone connection.

      Or you punch "Sally Hancock's Phone^H^H^H^H^HPing Pong Ball Trick" an' the screen blinks an' sputters an' you're hooked up with the logic in her house an' if somebody answers youve got a vision-phone connection.

      now *that*'s an accurate prediction
  63. Windows QE by Bizzeh · · Score: 0

    Windows Quantum Edition? wonder what minimum requirement for that will be...

  64. Go Blue! by mikapc · · Score: 1

    Ah I'm happy UM my Alma Mater. It's definetly a top notch research school.

    1. Re:Go Blue! by Anonymous Coward · · Score: 0

      Ah I'm happy UM my Alma Mater. It's definetly a top notch research school.

      Sounds like they have a top notch English department, too.

  65. Technical writeup (arXiv) by Anonymous Coward · · Score: 1, Informative

    Here's the peer-reviewed paper: http://arxiv.org/abs/quant-ph/0601052

  66. What are they trying to do? by cecil36 · · Score: 1

    Could it be that the head coach of the football team is going to be replaced by a quantum computer because the team can't finish in the Top 25, let alone beat Ohio State?

  67. First Ever? It's been done before! by ironwill96 · · Score: 3, Interesting

    I seem to recall that an article was posted on /. a few months ago about this as found here: http://hardware.slashdot.org/article.pl?sid=05/09/ 07/1241216

    And here is the company's webpage: http://atomchip.com/_wsn/page5.html

    See! Proof that Quantum-Optical computing has already been done!

    Ok, so maybe this would be the first non-vaporware quantum chip...

    --
    "To strive, to seek, to find, and not to yield." - Tennyson
  68. NO, I like THIS writeup better by sourbrew · · Score: 1

    I blogged this a solid month ago after posting it on metafilter.

    including such tidbits as this one.

    "This is very interesting and I don't want to diminish what this group has accomplished, but there is still a long way to go before we have a scaleable quantum computer.

    The biggest problem, as I understand it, is not in our ability to mass produce quantum computing systems. It is creating multi-qubit entangled systems. In quantum computing, 2 8-qubit registers is not the equivalent to 1 16-cubit register, which is much harder to produce.

    There was a recent FPP which linked to a number of articles, including one by a physicist who predicted that the largest qubit system allowed by the laws of nature was around 400 qubits. I don't agree with him, but we are certainly a long way from producing "usefully complex" quantum computers."


    by justkevin

  69. First replier here by Nymz · · Score: 1

    Thanks for the clarification, your definition sounds more accurate. TFA linked the word qubit to this definition:

    Unlike binary a qubit is capable of representing a 0, 1, or both 0 and 1 bit.

    Either way, 3 states or many many many states, it still doesn't seem accurate to claim each additional qubit will "double" the computing power.

    1. Re:First replier here by m50d · · Score: 1

      It does, because setting the qbit to both 0 and 1 allows you to do two calculations - the one you'd do if it was 0 and the one you'd do if it was 1 - at once.

      --
      I am trolling
  70. Quantum race? by Anonymous Coward · · Score: 0

    So the first people with a QC will be able to break everyone using encryption without one?
    No sure I want to relax just yet...[where is my tin foil hat?]

    1. Re:Quantum race? by zippthorne · · Score: 1

      They won't be able to crack my one-time pad.

      --
      Can you be Even More Awesome?!
  71. DOOM by Confoundit · · Score: 1

    Actually, the quantum computer version of DOOM will be at Best Buy within a couple on months.

    Unfortunatley, there will be at least an hour of cut scenes taken straight from the movie. And The Rock insisted that no one be allowed to bypass them.

  72. Easy to explain by SIGFPE · · Score: 1
    1. There is a factoring quantum algorithm (useful for cryptography): Shor's algorithm.
    2. There are quantum encryption techniques that can be viewed as quantum algorithms.
    3. There's a fast database search algorithm: Grover's algorithm.

    These are the three best known quantum algorithms.
    --
    -- SIGFPE
  73. A stab in the dark by zbuffered · · Score: 2, Interesting

    Cheap power supply?

    --
    Synergy is your friend
    1. Re:A stab in the dark by Belseth · · Score: 1

      Sorry. I've swapped power supplies and my notebook does the same thing. I've never had a Windows computer that was a 100% stable with graphics software other than Photoshop and it's crashed a few times over the years. If you want to run word processing in general it works fine but graphics are a lot more challenging and memory intensive. The problems in part seem to be memory related. Even Macs and Linux machines crash but Windows machines do it far too often. Video editing software is especially bad about crashing on Windows systems and it's a well known problem. I know a lot of people that work with windows editing software and the all have the same problems.

    2. Re:A stab in the dark by freedom_india · · Score: 1

      Maybe its you.

      Did you try booting up your computers with your GF or somebody else?
      Like you are not available in the room for days, and the machines never crash?

      Think about it.

      --
      "Doing what i can, with what i have." ~ Burt Gummer
  74. error! by ncurses · · Score: 1

    "The cadmium atom that has lost an electron becomes a negatively charged ion" ^from the article. I think that if it loses an electron it becomes a _positive_ ion. Eh?

    --
    Help! I'm being repressed!
    1. Re:error! by Anonymous Coward · · Score: 0

      "The cadmium atom that has lost an electron becomes a negatively charged ion" from the article. I think that if it loses an electron it becomes a _positive_ ion. Eh?

      Only in Ann Arbor, where the power of political correctness makes anything possible.

  75. U of Michigian Manuscript by Anonymous Coward · · Score: 1, Informative
  76. An idea for A.I. by Anonymous Coward · · Score: 0

    With faster searching of databases, that means larger and larger databases of instructions for A.I. could be created while at the same time making choice selection exponentially faster.

    This will be interesting

  77. Was it me, or did I watch the Simpsons wrong? by jftitan · · Score: 1

    I thought by now, technology, and the power of computing would double in size, and run only half as fast?

    So that Doctor was lying?

    --
    "Don't Forget to Salt the Fries"
  78. Apple by Anonymous Coward · · Score: 0

    Steve Jobs derides Intel, announces new processor switch.

  79. mod parent up by mfh · · Score: 1

    By far the easiest description of Qubits I've read to date. You sir, deserve mod points.

    --
    The dangers of knowledge trigger emotional distress in human beings.
  80. whaa??? by tacocat · · Score: 1
    "The cadmium atom that has lost an electron becomes a negatively charged ion, which can then be controlled with an electrical field," said Daniel Stick, a doctoral student in the University of Michigan's physics department who participated in the work.

    Last I checked, when an atom loses an electron it becomes a positively charged atom. Physics certainly has progressed since I was in college.

    1. Re:whaa??? by narcc · · Score: 0

      So this atom walks into a bar, right? And he's looking kinda sad -- so the bartender says to this atom "hey, buddy, why so down?" and the atom goes "sigh... I lost an electron..." The bartender looks at a couple electrons flying around him and just can't get a good count so he says to the atom "Are you sure?" and the atom goes "yeah, I'm positive"

  81. in a related story by adrianmonk · · Score: 3, Funny

    In a related story, after being told that U Mich now has quantum microchips working, Steve Jobs was heard saying, "Crap! FUCK! We just finished switching to Intel chips, and now THIS happens?! Now we're going to have to, I mean this will make us, I mean... DAMMIT! DAMN. IT. Stupid fucking processors -- we should've just stayed with m68k. I mean, what's the point?"

  82. UT2K10!! by Anonymous Coward · · Score: 0

    Think of Quantum UT2k10! OMFGLOLOLOZZ!!!!ONWOOnEnz

    My quantum twitch is faster than your quantum twitch!

  83. "Spin Doctors Create Quantum Chip" by Anonymous Coward · · Score: 0

    Har har, now -that's- clever!

    One colorful scientist told us "We can't make top nor bottom of this strange little device, but still, it has it's charm"

  84. EMPs? by marleyboy · · Score: 1

    Will electromagnetic pulses affect quantum computers?

    --
    Neutiquam erro
  85. Not fast enough by redNuht · · Score: 2, Funny

    quantum systems will be much more efficient at rock-solid cryptography and mass database searches than running the latest version of Doom.

    Not even quantum computing is fast enough for Doom 3, eh?

  86. I've got one right now by MasterOfGoingFaster · · Score: 1

    We won't be seeing any notebooks or handhelds with quantum chips in the near future.

    Odd... I looked in my old laptop, and on my Quantum HDD is a chip marked "Quantum"

    Woohoo! I've got leading edge technology.... and I didn't even realize it...
    --
    Place nail here >+
  87. Re:First Ever? It's been done before! by cartel · · Score: 1

    Yea, what happened with them? They were supposedly at that technology expo in Las Vegas...I wonder what happened. Anyone know?

  88. old news by le+duf · · Score: 2, Funny

    What's the big deal? Q*berts have been sround since 1982!

  89. No, no no... by js92647 · · Score: 1

    The perfect way to boost your karma: *takes a deep breath, ready to duck and run at the same time (pardon the pun)* How does that affect linux?

  90. Re:First Ever? It's been done before! by ccnull · · Score: 1

    I looked for the booth at CES but it appeared to be a nonexistant number... beyond the numbering of anything else in the convention center. However, Gizmodo claimed to have found it and that the product was real. Looks like a CompactFlash card with some pins glued onto it, but hey, that's just me.

    linky

  91. The real question.. by damneinstien · · Score: 1

    How many trees do these quantum chips require?

  92. Bloch Sphere by Anonymous Coward · · Score: 0

    Thank Felix Bloch.

  93. According to THIS article.... by Anonymous Coward · · Score: 0

    Cambridge University has created the first Quantum microchip.

    http://www.newscientist.com/channel/fundamentals/m g18925344.900

    But, hey!...I suppose it isn't a glorious patriotic genocidal good ole' USA chip......

  94. No quantum laptops soon? BS! by n6kuy · · Score: 1

    My kid has a Quantum LeapPad.
    It sits on her lap just fine!

    --
    If you disagree with me on social issues, then it's pretty clear that you are a narrow-minded bigot.
  95. wikipedia by damneinstien · · Score: 1

    "if wikipedia is correct"

    that's a big if

  96. In Quantum Soviet Russia.. by n6kuy · · Score: 1

    Party knows where you are AND where you are going..

    --
    If you disagree with me on social issues, then it's pretty clear that you are a narrow-minded bigot.
  97. Somebody please explain it by karlsruhe · · Score: 0

    from the wired atricle: "The cadmium atom that has lost an electron becomes a negatively charged ion, which can then be controlled with an electrical field,"
    The atom lost an electron and becomes a negatively charged ion? shouldn't it be a positive one?

  98. Obligitory Quantum Leap Theme by Bushido+Hacks · · Score: 1

    Sooner or later, someone had to have posted this:
    http://www.tvclassic.net/programs/quantumleap/quan tumleap.mp3

    --
    The Rapture is NOT an exit strategy.
  99. Gee this news is like 3 weeks old! by Anonymous Coward · · Score: 0

    Go recycling. This news is like 3 weeks old!

  100. We won't be seeing any notebooks or handhelds... by dodobh · · Score: 1

    because if you can see them, you won't know if they are actually working.

    --
    I can throw myself at the ground, and miss.
  101. DOOM by Anonymous Coward · · Score: 0

    From TFA:

    Researchers believe quantum systems will be much more efficient at rock-solid cryptography and mass database searches than running the latest version of Doom.

    With Quantum Chip, those monsters can come out to kick your ass yet you couldn't beat 'em... it is when you are doomed.

  102. Negatively charged ion? by Anonymous Coward · · Score: 0

    Hmmm
    Quote: "The cadmium atom that has lost an electron becomes a negatively charged ion"
    Does anyone else notice the fact that it must be a positivley charged ion after losing an electron?

    -D

  103. trinary by linforcer · · Score: 0

    From the article:

    The spin of the electron dictates the value of the quantum bit, or "qubit." For example, an up-spin can represent a one, or a down-spin can represent a zero -- or the qubit can occupy both states simultaneously.

    So we have a start of technology not just for quantum computers, but even for trinary quantum computers?

  104. Quantum Laptop Capabilities by duffer_01 · · Score: 1

    This Quantum laptop will let me see every porn pic on the net simultaneously, right?

  105. Charge error? by lithium3141 · · Score: 1

    Is it just me or should it say "the cadmium atom loses an electron, becoming a POSITIVE ion"?

  106. The Quantum Bookkeepers by Jimekai · · Score: 1

    Debit and credit double-entry bookkeeping are so second millennium, that on the St Lawrence topic I commented that Google aren't so much interested in AI itself, rather, the concept of "Quantum Bookkeeping" will become the competitive driving force between Google and Microsoft and may well be the reason behind the rumor that Bill Clinton will replace the chair thrower. I think I know how such a chip, as designed here, could be placed around the world and 'seeded' with the tensors of the quantum bookkeepers, to produce orgone for some people or real non-delusional hydrogen fuel, a la the Joe Cell, for others -- nanotechnology, etc.

    --
    Argumentum ad Probabilitum
  107. Atom loses electron & gets a negative charge W by xlurker · · Score: 1
    "The cadmium atom that has lost an electron becomes a negatively charged ion, which can then be controlled with an electrical field," said Daniel Stick, a doctoral student in the University of Michigan's physics department who participated in the work.
    either the doctoral student goofed or the writer and editors of the story really don't know the simplest thing about charges in an atom...

    come on people, 200+ comments on slashdot and nobody complains about this trivial mistake?

    --
    ______________________________________________
    sigamajig...
  108. Now all they need... by slashname3 · · Score: 1

    Now all they need is a micro beer to go with the micro chip. I wonder if they are working on a micro pretzel?

  109. What they'll be quoting in the future by lordofthechia · · Score: 1

    "16 Exabytes should be enough for anybody"

    --
    Georgia Tech, the leader in Chia(tm) technology.
  110. Crypto by adrianbaugh · · Score: 1

    Will your notebook or desktop PC someday sport quantum innards? It's unlikely, at least in the immediate future. Researchers believe quantum systems will be much more efficient at rock-solid cryptography and mass database searches than running the latest version of Doom.

    Yeah, because nobody has any use for rock solid cryptography on a notebook or desktop PC... Oh, wait.

    --
    "'I pass the test,' she said. 'I will diminish, and go into the West, and remain Galadriel.'"
    - JRR Tolkien.
  111. Re:uh oh... (relax) by sinewalker · · Score: 1

    yeah -- after posting I remembered the quantum entaglement thing and it's applications for cryptology. To implement a DRM solution arround it, would require all DRM devices to be entangled with the master's electrons?!? Not practical for a mass distributed document. In fact, is it even possible for that application?

    --
    “Our opponent is an alien starship packed with nuclear bombs. We have a protractor.” — Neal Stepnenso