Exploiting Randomness in Quantum Information Processing

Details Exploiting Randomness in Quantum Information Processing Exploiting Randomness in Quantum Information Processing

2002-07-15

arxiv.org/abs/quant-ph/0207080v2

Phys. Lett. A 301, 343 (2002)

Physics

Quantum Physics

10 pages, final version

Scientific paper

10.1016/S0375-9601(02)01088-5

We consider how randomness can be made to play a useful role in quantum information processing - in particular, for decoherence control and the implementation of quantum algorithms. For a two-level system in which the decoherence channel is non-dissipative, we show that decoherence suppression is possible if memory is present in the channel. Random switching between two potentially harmful noise sources can then provide a source of stochastic control. Such random switching can also be used in an advantageous way for the implementation of quantum algorithms.

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