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OMG! SCIENCE!
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MsFrisby



Joined: 09 Jul 2006
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Location: a quiet little corner of crazy

PostPosted: Thu Oct 05, 2006 1:30 am    Post subject: OMG! SCIENCE! Reply with quote

Quote:
Scientists teleport two different objects
LONDON, England (Reuters) -- Beaming people in Star Trek fashion is still in the realms of science fiction but physicists in Denmark have teleported information from light to matter bringing quantum communication and computing closer to reality.

Until now scientists have teleported similar objects such as light or single atoms over short distances from one spot to another in a split second.

But Professor Eugene Polzik and his team at the Niels Bohr Institute at Copenhagen University in Denmark have made a breakthrough by using both light and matter.

"It is one step further because for the first time it involves teleportation between light and matter, two different objects. One is the carrier of information and the other one is the storage medium," Polzik explained in an interview on Wednesday.

The experiment involved for the first time a macroscopic atomic object containing thousands of billions of atoms. They also teleported the information a distance of half a meter but believe it can be extended further.

"Teleportation between two single atoms had been done two years ago by two teams but this was done at a distance of a fraction of a millimeter," Polzik, of the Danish National Research Foundation Center for Quantum Optics, explained.

"Our method allows teleportation to be taken over longer distances because it involves light as the carrier of entanglement," he added.

Quantum entanglement involves entwining two or more particles without physical contact.

Although teleportation is associated with the science-fiction series Star Trek, no one is likely to be beamed anywhere soon.

But the achievement of Polzik's team, in collaboration with the theorist Ignacio Cirac of the Max Planck Institute for Quantum Optics in Garching, Germany, marks an advancement in the field of quantum information and computers, which could transmit and process information in a way that was impossible before.

"It is really about teleporting information from one site to another site. Quantum information is different from classical information in the sense that it cannot be measured. It has much higher information capacity and it cannot be eavesdropped on. The transmission of quantum information can be made unconditionally secure," said Polzik whose research is reported in the journal Nature.

Quantum computing requires manipulation of information contained in the quantum states, which include physical properties such as energy, motion and magnetic field, of the atoms.

"Creating entanglement is a very important step but there are two more steps at least to perform teleportation. We have succeeded in making all three steps -- that is entanglement, quantum measurement and quantum feedback," he added.


http://www.cnn.com/2006/TECH/science/10/04/teleportation.reut/index.html
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Major Tom



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PostPosted: Thu Oct 05, 2006 1:34 am    Post subject: Reply with quote


Iiiiiiinteresting
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WheelsOfConfusion



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PostPosted: Thu Oct 05, 2006 2:43 am    Post subject: Reply with quote

Major Tom wrote:
Iiiiiiinteresting

So that's what all the buzz is about.
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mantismag



Joined: 09 Jul 2006
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PostPosted: Thu Oct 05, 2006 2:49 am    Post subject: Reply with quote

is it just me or did that article not explain what the experiment was about at all?
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Twister87
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PostPosted: Thu Oct 05, 2006 3:10 am    Post subject: Reply with quote

Aussie scientists did it first! Very Happy
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Darqcyde



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PostPosted: Thu Oct 05, 2006 3:15 am    Post subject: Reply with quote

Major Tom wrote:

Iiiiiiinteresting


TUVIX!
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Michael



Joined: 09 Jul 2006
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PostPosted: Thu Oct 05, 2006 9:53 am    Post subject: Reply with quote

[quantum]"Quantum information is different from classical information in the sense that it cannot be measured. It has much higher information capacity and it cannot be eavesdropped on. The transmission of quantum information can be made unconditionally secure," said Polzik whose research is reported in the journal Nature. [/quote]

uhm...

is this setting off anyone elses pseudo-science alert?

The rest sounds cool, but hard claims like these in the beginning of a project together with the "it cannot be measured" kinda put me off
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kame



Joined: 11 Jul 2006
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PostPosted: Thu Oct 05, 2006 11:07 am    Post subject: Reply with quote

Uhm no, what it is saying is that there is no way to intercept the communication. You can still measure the results since the information is going to be received somewhere.
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E-boy



Joined: 10 Jul 2006
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PostPosted: Thu Oct 05, 2006 2:41 pm    Post subject: Reply with quote

INFORMATION is the key word here. Each of us could basically be referred to as a collection of ambulatory information. Right down to the information on the states of our individual atoms.

If all this information could be read, and moved (preferably non-destructively), You'd be you at the moment of transition somewhere else. Of course, you'd have to have matter on hand and and entangled already on the distant end.... There's no free lunch, after all.
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Lasairfiona



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PostPosted: Thu Oct 05, 2006 2:57 pm    Post subject: Reply with quote

Michael wrote:
The rest sounds cool, but hard claims like these in the beginning of a project together with the "it cannot be measured" kinda put me off


Welcome to quantum.
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Feiticeira



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PostPosted: Thu Oct 05, 2006 4:30 pm    Post subject: Reply with quote

Soon as they adapt it for human travel I'll come hang out with [some of] you guys.
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Amilam



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PostPosted: Thu Oct 05, 2006 4:41 pm    Post subject: Reply with quote

*looks around for Futurama nerds

"No fair! You changed the results by measuring it!"
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Willem



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PostPosted: Thu Oct 05, 2006 4:49 pm    Post subject: Reply with quote

Amilam wrote:
*looks around for Futurama nerds

"No fair! You changed the results by measuring it!"


Squee!
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kame



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PostPosted: Thu Oct 05, 2006 5:43 pm    Post subject: Reply with quote

Holy Zombie Jesus!
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Michael



Joined: 09 Jul 2006
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PostPosted: Thu Oct 05, 2006 5:58 pm    Post subject: Re: OMG! SCIENCE! Reply with quote

Quote:
"It is really about teleporting information from one site to another site. Quantum information is different from classical information in the sense that it cannot be measured.

what does this mean? Obviously it can be measured in some way or you couldn't ever read the stuff so that can't be what he's getting at...

and then there's
Quote:
"It has much higher information capacity and it cannot be eavesdropped on. The transmission of quantum information can be made unconditionally secure"

which just sounds naive. People are always doing stuff that can't be done, especially when it comes to sensitive areas like secure information transmission. And why is he bringing it up at all? Isn't the fact that they just teleported a thousand billion times more matter over a distance a thousand times longer than was ever done before staggering enough?
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