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Algorithm runs faster on quantum computer

OCT 24, 2014
Physics Today

New Scientist : Twenty years ago Daniel Simon devised a simple period-finding problem that a quantum computer could conceivably solve exponentially faster than a classical computer. Now Mark Tame of the University of KwaZulu-Natal in Durban, South Africa, and his collaborators have built an elementary, photon-based quantum computer that not only solves Simon’s problem but also reaches a solution faster when run in quantum mode than in classical mode. Although Simon’s problem is too simple to be useful, its design inspired other, potentially more useful algorithms.

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