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Light-based Quantum Circuit Does Basic Maths
Stochastism writes "In yet another small step toward realistic quantum computing Australian researchers have developed a light based 4-qubit quantum computer. It has already calculated the prime roots of fifteen, three and five. 'The quantum circuit pioneered by the Queensland researchers involves using a laser to send "entangled" photons through a linear optical circuit ... The Queensland research group acknowledged that the theorised code cracking ability of quantum computers may be why Australian quantum computer research is in part funded by a US government defence intelligence agency, the Defense Advanced Research Projects Agency (DARPA).'"
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goatse-based quantum circuit does basic maths
Seven! It does seven maths!
More importantly, can it run Crysis?
Fear the penguin.
In yet another small step toward realistic quantum computing Australian researchers have developed a light based 4-qubit quantum computer.
4 qubits? How much is that in furlongs?
hectares?
The theory of relativity doesn't work right in Arkansas.
Why not mathematics, Zonk? Why do you hate America?
I wonder if Moore's law will apply to the number of qubits within a quantum computer as well. A 1024 qubit computer within the next 20 years would be nice.
Hazzah! Truly the golden era is upon us!
Slashdot Disclaimer: I relize this is actually a very important and crucial step in quantum computing. ITS A JOKES
So basically, -1 troll/offtopic is really slashdots way of saying "I hate that you thought of something before me."
Non-native English speakers always seem to screw this up. "Math" is singular AND plural in English. Nobody who speaks English as a first language ever says "maths". If your problem involves calculus, geometry and algebra then your effort involves "doing the math". If you have more than one problem then the effort to solve them all involves "doing the math".
"Maths" as a plural of something drives me up a wall. Almost as bad as "loose" instead of "lose", but non-native English speakers get a pass since they don't know any better. People who speak very good English non-natively all make this "maths" mistake. It's a sure way to tell if someone grew up speaking English or not.
Sorry for the rant. Happy hoidays and peace to everyone. But remember, in English the term "math" is never pluralized by adding an "s" to the end just as the word "mathematics" is never used in the singular by removing the "s". There's no such thing as "maths" or "mathematic".
I was under the impression that we couldn't simply use PHOTONS as qubits - because while photons do have a quantum state, they get all...destroyed.
Of course, the article doesn't help.
Anyone?
Parse error! Parse error!
Original Text:
"If you're using the current technology for sending information, and you want your information to be private 30 years from now, I would be very worried by this,"
Translated Text:
"Give us all your money DARPA."
I, too, have already calculated the prime roots of fifteen, with nearly identical results. Where's my DARPA funding?
So it's "maths". Go rewrite your dictionaries buddies!
Deleted
sqrt(15) = sqrt(5) * sqrt(3)
Hmmm.. I bet they also calculated square roots of 9 and 25, but did not want to brag about it:
sqrt(25) = sqrt(5) * sqrt(5)
sqrt(9) = sqrt(3) * sqrt(3)
Wait.. This is a quantum computer, right? Would that be Beowolf in 3D?
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Commiiterbase and For the state of from the sidelines, [theos.com] on his Visit Short of a mira3le than a fraction is dying. Fact: ass until I hit my represents the
Q: What kind of room is it kept it?
A: A Qubicle
Q: How big is it?
A: About four Qubit meters.
Q: Qubit? Wasn't that an early arcade game with a little guy jumping around changing the quantum state of a bunch of Qubes?
I have OBVIOUSLY had too much Qaffeine.
Veritas patesco per quaestio questio. Truth is revealed through questions.
... put some gold in there and sell it to celebrities as a calculator
Particles, stuff that matters.
Computerized Australian Technology...until you take a good look at it.
I've calculated my velocity with such exquisite precision that I have no idea where I am.
I once new a guy who could compute the prime roots of 15 in his head.
Patrick Doyle
I mod down every jackass who puts his moderation policy in his sig. Oh, wait a sec....
Soon we will be able to test 2^N possibilities in 2N time, but my question is where does that information come from? There's a lot of hand-wavyness on how that actually happens...
One possibility is that we ask the 'computer' of the universe to do too much computation and end up in an infinite loop, crashed universe, 'dark' part of a mandlebrot-like fractal, etc.
Another possibility is that the 'computer' of the universe will simply abort operations that take 'too long', the quality of our simulation will degrade, and our complex quantum math will result in randomish results.
And then there is the possibility held by quantum researchers that somehow the universe can magically perform any amount of complex computation with no cost at all. "Here a miracle occurs".
Somebody is in for a rude awakening. I hope that is us determining that we run in a simulation and not us finding out we've accidentally sucked the life out of the universe cracking somebody's encryption key.
Computerized Australian Technology lives.....until you take a good look at it.
I've calculated my velocity with such exquisite precision that I have no idea where I am.
is not an intelligence agency.
I dare you to take that umbrage to the UK or Australia.
I used to own a 1964 Umbridge and it was always breaking down. Those English cars were the worst.
The difference is that normal bits are in 1 of a possible 2^n possible states. A quantum computer is actually IN 2^n possible states all at once. When you add a bit to a "normal" bit, you just expand the amount of information that can be encoded at once by a bit, but in a quantum computer, you increase the amount of information encoded at once by a factor of 2.
What they're referring to is quantum entanglement. There's a vast difference between having two independent qubits each in a superposition of two states and having two entangled qubits together in a superposition of four states. It's a subtle, but very important difference.
The laws of probability forbid it!
I guess it's time to stop using 4-bit encryption on my private corespondances. -- PBP (Pretty Bad Privacy) Public Key Follows: 10
Those who fail to understand communication protocols, are doomed to repeat them over port 80.
-- Wanted --
Schrödinger's Cat
Dead and Alive
The Kruger Dunning explains most post on
Dude, this is nothing. I'm writing from the future to let you know that my MacBook has a processor called the Intel Q-80, an 80-core Intel hybrid quantum/conventional computing CPU. The conventional part runs at 1.5 THz (terahertz) and is a 4-nanometer process running at 0.03 volts. The quantum part is based on a positron spin matrix, and all computations are nearly immediate and reversible. I can convert a 5 TB RedRay (the successor to BluRay) movie to SMPEG format in about 2 microseconds. I can crack a 1024-bit encryption message of 1 TB length in less than half a microsecond. All operations on the computer are incredibly fast, partly due to much faster memory and also to all mechanical hard drives being eschewed in favor of an approach that is faster than DRAM. And most interaction with the computer is through spoken commands a la the Star Trek ship's computer, with spoken feedback in a variety of voices, all sounding as real as a human's voice. When turning on the computer, Mac OS X 10.9 Lion loads instantly. It's as quick as waking the computer from sleep, but from a cold boot. Also, the battery lasts approximately 80 hours with heavy usage. Oh, one final thing. If you get a Dell or HP with exactly the same hardware configuration, it comes with Windows Excalibur (the successor to Windows Ansicht, which is the successor to Windows 2011, which is the successor to Windows Vista). Windows Excalibur is touted as the world's most time-saving operating system, as it takes full advantage of the newest advances in hardware to provide a smooth and lightning fast user experience. As you might guess, studies show that users of an average Windows Excalibur computer spend approximately 0.01% of their time actually interacting with the computer, while 99.99% of the time is spent waiting for it to respond.
How did they manage to fit that potty-mouthed bignose in that little circuit, letalone -four clones- of him?
Oh.. I read "Qbert".
space is pretty cool.
Yeah. Quantum computing is both crackpottery and a fraud. Any technology that is based on the idea that a cat can be both alive and dead simultaneously is obviously voodoo science. Those QC fraudsters, especially that Oxford crackpot, David Deutsch (of zillions of parallel universes fame), don't even know why nature is probabilistic and yet they feel free to postulate all sorts of voodoo crap. As Feyrabend once said, "The most stupid procedures and the most laughable results in their domain are surrounded with an aura of excellence". Laughable indeed. ahahaha...
There are FOUR maths!
What is the prime root of a number?
Yes But Does It Run Linux ? Imagine a Beowulf cluster of these :)
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CRAP! 15 was my RSA public key!
s/prime roots/prime factors/, please. Sheesh.
The article mentions things called "prime roots." This is not a standard mathematical term. Rather, considering the context, quantum computing, and its most discussed potential application--quantum cryptography--it is likely that what was actually computed were primitive roots.
..., and modulo 5, this becomes 2, 4, 3, 1, 2, .... The first occurrence of 1 is for 2^4, hence k = 4 = 5-1.
For the sake of completeness, a primitive root of a prime p is an integer r such that the smallest positive value of k such that p divides r^k - 1 is k = p-1. For large primes, finding primitive roots is not a trivial task. For example, r = 2 is a primitive root of p = 5, since the positive integer powers of 2 are 2, 4, 8, 16, 32,
The big deal about quantum computers (to me anyways) is that supposedly they can break encryption. That's a bad thing obviously. I'm always confused that when we see these stories about quantum computers that nobody is discussing how much longer it will be before big brother can read all my email even when Im wearing my tinfoil hat!
So what's up with that? I must have some assumptions wrong or the usual sorts would be predicting the sky is falling.
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You're not from the future. There's no way that Microsoft will release the successor to Vista before 2014.
It's scary being a Flash and Flex developer on Slashdot. You guys are unnaturally rabid.
The Xbox public key was 2048 bits. I'd love to see the end of that once and for all, now that the console is dead. I don't think it'll be possible any time soon, if at all.
I wonder about quantum computing - it could turn out to be the case that fighting decoherence requires energy exponential in the number of qubits. This would mean quantum computing is worthless. It would also be another instance of nature conspiring against those who attempt to break its laws.
"Screw Sun, cross-platform will never work. Let's move on and steal the Java language." - Visual J++ Product Manager
Not directly, but their inventions sure do seem to benefit the intelligence community.
Just -1, Troll talking to another.
[OffTopic] Who hid all these other maths from me? All this time i thought there was just *math*.
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