Open-Destination Quantum Teleportation

Roland Piquepaille writes "An international team of physicists has entangled five photons for the first time in the world, reports Technology Research News in "Five photons linked." Why is this important? Because it's the minimum number of qubits needed for universal error correction in quantum computing. In other words, they found a way to check computational errors in future quantum computers. The physicists also demonstrated what they call 'open-destination teleportation,' a way to teleport quantum information within and between computers." "They teleported the unknown quantum state of a single photon onto a superposition of three photons. They were then able to read out this teleported state at any one of the three photons by performing a measurement on the other two photons," adds PhysicsWeb in "Entanglement breaks new record ". This will be used in about ten to twenty years to move information among quantum networks. You'll find more details and references in this overview."

Comments

This is what a normal person just read above.

[Anonymous Coward]

Blah Blah Blah Blah,Blah,Blah, You have the bridge #1.

Re:This is what a normal person just read above.

[Dorothy 86]

It also means one step closer to computers powerful enough that we can, say for example, model the human body to test all possible drug combinations at the same time.

you forgot that it is one step closer to being able to run Longhorn!

Re:This is what a normal person just read above.

[john_smith_45678]

Thanks Commander Data.

Re:This is what a normal person just read above.

[zangdesign]

One step closer to the singularity...

The day some idiot turns decision making over to computers is the day I start the Butlerian Jihad.

Re:This is what a normal person just read above.

[krumms]

It's actually fairly simple. In QC, you can perform any quantum operations on the qubits, but you cannot look at the bits without losing some information. Therefore, what you do is use error correcting codes, by superimposing the quantum states onto a set of photons whose states you observe, but do not use. What they have done here is basically taken the unknown quantum state of a photon onto a superposition set of three photons, and you can find the state of any one photon by observing the other two photons.

Ah, much better. Thank you for putting it in layman's terms.

Now, if you'll excuse me I think I feel my head exploding ...

Re:This is what a normal person just read above.

[Anonymous Coward]

It also means one step closer to computers powerful enough that we can, say for example, model the human body to test all possible drug combinations at the same time.

"Woooo! The colors!"

Re:This is what a normal person just read above.

[elFarto the 2nd]

It can have any state, in between 0 & 1 -- just that you are not permitted to know what state it is in.

Kinda like a women then?

Regards
elFarto

Re:This is what a normal person just read above.

[Anonymous Coward]

Why does it not surprise me that someone who doesn't understand science would be pro bush?... LOL

Re:This is what a normal person just read above.

[Captain Tripps]

And hides their identity behind "Anonymous Coward"

Yeah, you tell him, "john_smith"!

Cool

[Anonymous Coward]

Imagine a bewolf cluster of quantum computers!!!

Teleportation?

[keiferb]

Ok... so when do I get to stroll downstairs in the morning and say "Energize" to some guy standing at the controls of my transporter pad to get to work, rather than driving?

Re:Teleportation?

[Usquebaugh]

The very day you want to be erased and a doppleganger to appear in your place of work.

Re:Teleportation?

[Duke Machesne]

The trick is to get the doppelganger into the workplace while the original is sipping cocktails on the ninth green...

Re:Teleportation?

[oneade]

Umm... I would think an exact replica of yourself would probably object to sharing your earnings with someone who didn't do any of the work.

Re:Teleportation?

[bhima]

Well most of us already are... it's called taxes

Very obligatory Futurama

[Anonymous Coward]

They were then able to read out this teleported state at any one of the three photons by performing a measurement on the other two photon

Professor: No fair! You changed the outcome by measuring it!

Re:Very obligatory Futurama

[servognome]

I don't know what any of that meant, but I think Schroedinger's Cat is gonna be pissed. Or not...
Actually both

Re:Very obligatory Futurama

[Bush Pig]

No, not both, but you won't know whether or not Schroedinger's cat is pissed off till you put your hand in its box and it comes out bleeding (or not). Oh, wait, that sounds just like a normal cat in a box.

Make it so!

[LiquidCoooled]

I'm going to bed.

Enterprise, one to beam up.

Re:Make it so!

[Anonymous Coward]

You NAMED your bed Enterprise?

<Insert Parent's Basement Joke Here>

Re:oh please

[Klar]

This could lead to downloading mp3's before they have been recorded.. try to stop that RIAA bastards!

What this means

[NotQuiteReal]

I didn't RTFA, but I'll just guess that it lays the groundwork for building a computer, sometime in the next century that will be able to completely emulate [read: upload] a human personality/consciousness into an environment where they think they are still alive.

Of course, during upload their body would have been destroyed. Anyhoo, it sure will suck to have been the last person to think they had to die.

And that, is the point of this article. Fodder for postings such as this. Etc.

[And yes, I did have to use a spell-checker to get "consciousness" right, what are else computers for, if not for spelling?]

Or perhaps...

[hndrcks]

...did someone let a fly in there?

Already done?

[mozingod]

Open-Destination Teleportation...wasn't this already tested with success? Yea, I seem to remember a story about this. Something about all hell breaking lose and killing all the Marines/scientists that were working on the project though...

Re:Already done?

[visgoth]

I recall somthing to that effect as well. However, I did find a training simulation that should help prepare us for what to do in case all hell does break loose.

Finally...

[PDHoss]

...I empathize with Barbie. Math is hard.

Marilyn Chambers to the transporter room!

[orthogonal]

The physicists also demonstrated what they call 'open-destination teleportation,' a way to teleport quantum information within and between computers."

See honey, I wasn't lying when I told you I knew nothing about it!

One of those physicists must have teleported that donkey porn onto my computer!

Limited use?

[spellraiser]

From TFA:

In quantum teleportation, complete information about the quantum state of a particle is instantaneously transferred by the sender, who is usually called Alice, to a receiver called Bob.

So, this would only be useful for sending information about a quantum state to guys named Bob? The quantum state thing is limiting enough, but c'mon ... Bob?

Well, tell you what. I'm changing my name to Bob. If you can't beat them, join them. I mean, these guys will be the information uberlords of the future. People will queue up to them, asking 'Did anything come for me yet?' And they will go, like, 'Show me the money!'

The Bobs of the future will be ultra-popular and rich.

...

Yes, I haven't taken my medication today? Why do you ask? :P

Re:Limited use?

[Frogbert]

As a person who's name is Mallory I find this comment and your subsequent emails to your girlfriend offensive and arousing respectivily.

Re:Limited use?

[Quantum Jim]

such as Mallory, who represents anyone who might maliciously try to intercept the message in transit.

So that's why TPTB named the main character of Sliders was named Quinn Mallory?

(Offtopic.) That show is frustrating! So many cool nuancies.... so many bad plots....

Future or syntax?

[sammyo]

"they found a way to check computational errors in future quantum computers."

Just how far in the future will we be able to check? Should be a great aid to debugging! But what happens if I fix a problem that causes my great grandson to come back in time to help me to meet my wife? Oh, wait.

I do not pretend to understand.

[OrthodonticJake]

But it sounds a whole lot like Ender's Game. When will I be able to buy an Ansible from my local radioshack?

Tsk tsk ...

[H_Fisher]

More than 60 posts replying to an article with "quantum" in the blurb, and not one Quantum Leap reference or bitchy gripe about the quality of Star Trek: Enterprise.

And you call yourselves nerds!

Re:oh please

[britneys 9th husband]

This could lead to downloading mp3's before they have been recorded.. try to stop that RIAA bastards!

I'm going to download mp3s of all of next year's songs, copyright them myself, and release them into the public domain! Bwahaha! Take that, RIAA!

This is first

[JustOK]

Thanks to quantum computation and teleportation, this is actually the first post.

Re:This is first

[chazzf]

Yes, but the act of modding it up changed its location. Sorry about that...

Now is the time to create prior art

[G4from128k]

Given the patent fiasco of the internet (just add "e" to anything and receive a free patent), now is the time to create prior art for quantum computing and publish all the ideas for adding "q" to everything. Only by striking first and getting innovation in the public domain can we have true open and unencumbered standards.

And as long as wide spread adoption of quantum computing is more that 17 years away, companies can't read this message and strike first (prepatenting these ideas first). If companies patent ideas too soon, the patent will be dead when the real money is being made.

I don't think three is enough...

[eRacer1]

On my systems three Q*berts is not sufficient for error correction in my simulations. Coily always gets me sooner rather than later.

Re:Quantum...

[karmatic]

In one hour? To quote from the article, "Quantum computers have the potential to be blazingly fast because a string of quantum bits, or qubits, that store the ones and zeros of computer information can represent all the numbers possible within that string at once."

In other words, in the time it takes you to transfer a single porn movie, you can simultaneously transmit _every_ porn movie of the same size or less.

Now that's a lot of porn.

The RIAA Wants Quantum Computing

[serutan]

Quantum teleportation is akin to faxing a document and in the process destroying the original.

[Scene: RIAA Headquarters]
Mitch Bainwol: "This quadrant teleportation thing sounds too good to be true."
Cary Sherman: "Get me Orrin Hatch on the phone. We need mandatory quantum teleplantation by 2010."

They got it working already

[baywulf]

They get it working already. Only problem is when you are teleported you get a goatee and become evil.

Re:oh please

[DrStrange66]

This could lead to downloading mp3's before they have been recorded.. try to stop that RIAA bastards!

Obligatory quote: SANDURZ: Pardon me, sir. I have an idea. Corporal, get me the video cassette of Spaceballs - the Movie. CORPORAL: Yes, sir. HELMET: Colonel Sandurz, may I speak with you, please? SANDURZ: Yes, sir. HELMET: How could there be a cassette of Spaceballs - the Movie. We're still in the middle of making it. SANDURZ: That's true, sir, but there's been a new breakthrough in home-video marketing. HELMET: There has? SANDURZ: Yes. Instant cassettes. They're out in stores before the movie is finished.

A dangerous Tech...

[icedcool]

Because we all know what happens when you open the teleporter.

Long times in the dark with guns without flashlights, thats what.

Quantum Humor

[ImaLamer]

However, according to Quantum Mechanics, the act of observing the particle changes the state of it.

Werner Heisenberg was pulled over...

Police Officer: Can you tell me how fast you were going?

Heisenberg: No, but I can tell you exactly where I am!