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Theorists Make Quantum Communications Breakthrough

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Old Aug 6, 2008, 01:55am Default Theorists Make Quantum Communications Breakthrough
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KentuckyFC writes "One of the cornerstones of modern physics is Claude Shannon's theory of communication, which he published in 1948. If you've ever made a phone call, watched TV, or used a computer, you've got Shannon to thank for describing how information can be moved from one place in the universe to another using an idea called the channel capacity. But nobody has been able to develop a quantum version of this theory. So physicists have no idea how much quantum information can be sent from one point to another. Now two American physicists have made an important breakthrough by proving that two quantum channels with zero capacity can carry information when used together. That's interesting because it indicates that physicists may have been barking up the wrong tree with this problem: it implies that the quantum capacity of a channel does not uniquely specify its ability for transmitting quantum information (abstract). And that could be the idea that breaks the logjam in this area."
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Old Aug 6, 2008, 07:33pm Default Re: Theorists Make Quantum Communications Breakthrough
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Originally Posted by TNT Bot View Post
That's interesting because it indicates that physicists may have been barking up the wrong tree with this problem
Heh, the premise/conclusion reminds me of an episode of "The Outer Limits" (newer series from the 1990's, not the older 1960's one)... specifically the episode entitled:

"THE FINAL EXAM"



* Which I absolutely & HIGHLY recommend to anyone to watch... it's great!

APK

P.S.=> Anyhow, the main character (who solves the problem of Nuke Fusion, though everyone is against he etc. & says "it can't be done @ room temp." etc. & more (including many stealing his ideas et al)), said it best:

"It's so SIMPLE, a child could do it - it's right in front of them, but, they're asking the RIGHT question, but expecting the WRONG results!"

apk
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Last edited by APK; Aug 6, 2008 at 07:36pm.
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