Teleporting Light: A Breakthrough in Quantum Computing
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http://www.metacafe.com/watch/6274594/teleporting_light_a_breakthrough_in_quantum_computing/
BY STEVEN SPARKMAN
ANCHOR CHRISTINA HARTMAN
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The rules of quantum physics are strange, but they allow some pretty bizarre stuff. For instance, a new breakthrough might make super-fast computers possible using teleportation.
ABC Australia reports: “Researchers from Australia and Japan have successfully teleported wave packets of light, potentially revolutionizing quantum communications and computing. … They did it by teleporting the wave packets of light in a ‘Schrodinger's cat’ state.”
The name “Schrodinger’s cat” comes from a famous thought experiment, where a cat in a box can be either alive or dead. The observer can’t know either way -- so to them, the cat is both alive and dead until the box is opened.
The “cat” in this experiment wasn’t an actual feline -- it was packets of light in a Schrodinger’s cat state. In computing terms, it’s like a bit that’s both a one and a zero at the same time. (Image source: Live Science)
The problem with quantum data is getting it from one place to another. That’s where teleportation comes in. It’s a complicated process, but PopSci gives us a layman’s summary.
“In this experiment, researchers ... were able to transfer quantum information from one place to another without having to physically move it. It was destroyed in one place and instantly resurrected in another, ‘alive’ again and unchanged.”
While the idea of teleporting conjures up images of sci-fi movies, that isn’t the main goal of this research. Live Science explains, the earliest payoffs will likely appeal more to tech geeks than sci-fi nerds.
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- Quantum Physics, Computers, Teleportation, Australia, Japan, Wave Packets, Light, Quantum Communication, Schrodingers Cat, Schrodingers Cat State, Researchers, Quantum Information, Tech News, Information, Quantum Computing, Computing Speed, Video News
New Bits of Light Teleported to Another Place - Read Article Below
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http://www.youtube.com/watch?v=GABcJwP-fRs
Researchers from Australia and Japan have recently reported a successful attempt at quantum teleportation of a complex quantum system from a certain point A to another point B without losing information. The team was led by scientists from the University of Tokyo, in the lab of Professor Akira Furusawa. This leads to the possibility of achieving fast, high-fidelity transmission of huge chunks of data, all at once, thus revolutionising the current data transportation scenario and providing a boost to the ongoing research on quantum computers.
Schrodinger and his Cat
The Schrodinger Cat paradox appeared in 1934 and was proposed by Erwin Schrodinger, one of the founders of quantum theory. This thought experiment (‘gedankenexperiment‘) consists of the following setup: A cat is kept in an opaque box with a sealed glass chamber inside it, containing poisonous gas. The glass can be broken by a hammer, which is itself triggered by the decay of a radioactive atom. Since the decay of any radioactive atom is governed by quantum laws and is, thus, entirely probabilistic, no one can say whether the cat is alive or dead with absolute certainty. The answer, however, becomes obvious when one looks into the box. Before the observation, one is forced to conclude that the cat is dead and alive at the same time; it is in a superposition of ‘dead’ and ‘alive’ states. Thus, observation changes the system irreversibly; scientists call it ‘collapse’.
Schrodinger's Cat (Image from Wikipedia)
Whereas quantum superposition and collapse are well-accepted by physicists, applying them to macroscopic objects like cats instead of quantum particles makes the situation very strange. The strangeness enticed Schrodinger enough to propose this paradox.
Teleportation, Qubits and the Quantum Computer
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