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quantum computer
(redirected from Quantum computation)

    Also found in: Acronyms, Wikipedia 0.02 sec.
quantum computer [′kwän·təm kəm¦pyüd·ər]
(computer science)
A computer in which the time evolution of the state of the individual switching elements of the computer is governed by the laws of quantum mechanics.
(computer)quantum computer - A type of computer which uses the ability of quantum systems, such as a collection of atoms, to be in many different states at once. In theory, such superpositions allow the computer to perform many different computations simultaneously. This capability is combined with interference among the states to produce answers to some problems, such as factoring integers, much more rapidly than is possible with conventional computers. In practice, such machines have not yet been built due to their extreme sensitivity to noise.

Oxford University, Stanford University.

A quantum search algorithm for constraint satisfaction problems exhibits the phase transition for NP-complete problems.


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In doing so, he demonstrates how the laws of physics can be used to perform quantum computations.
Programming The Universe: A Quantum Computer Scientist Takes On the ... by Science News
Past attempts at manipulation of single Cooper pairs for both metrology and quantum computation have been hampered by the existence of a small number of residual unpaired electrons in the superconducting state.
NIST uncovers clue to successful manipulation of paired electrons. ... by Journal of Research of the National Institute of Standards and Technology
Kitaev's paper was stunningly original," says John Preskill, who studies quantum computation at the California Institute of Technology in Pasadena.
Knotty calculations: a quantum version of braids could lay the ... by Klarreich, Erica / Science News
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