London software testing news UK


Simpler way to test quantum computers

Posted in Acceptance testing by testing in London on September 27, 2008

From Physics World

Physicists in Canada have invented a new way of testing optical components that could someday be used to build quantum computers. They claim that their technique is much simpler than conventional tests because it uses standard laser light, rather than relying on the creation of photons in special quantum states.

A quantum computer could, at least in principle, exploit the weird laws of quantum mechanics to vastly outperform classical computers on certain tasks. In such a computer, data would be input and stored in terms of quantum states — such as the polarization of individual photons. These data would be processed by devices that involve transitions in quantum systems, such as the absorption and emission of photons by a single atom.

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