Quantum information processing with noisy cluster states

Details Quantum information processing with noisy cluster states Quantum information processing with noisy cluster states

2005-02-14

arxiv.org/abs/quant-ph/0502081v1

Phys. Rev. A 72, 012319 (2005)

Physics

Quantum Physics

13 pages, 13 figures, RevTeX

Scientific paper

10.1103/PhysRevA.72.012319

We provide an analysis of basic quantum information processing protocols under the effect of intrinsic non-idealities in cluster states. These non-idealities are based on the introduction of randomness in the entangling steps that create the cluster state and are motivated by the unavoidable imperfections faced in creating entanglement using condensed-matter systems. Aided by the use of an alternative and very efficient method to construct cluster state configurations, which relies on the concatenation of fundamental cluster structures, we address quantum state transfer and various fundamental gate simulations through noisy cluster states. We find that a winning strategy to limit the effects of noise, is the management of small clusters processed via just a few measurements. Our study also reinforces recent ideas related to the optical implementation of a one-way quantum computer.

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