Quantum-information processing with noisy cluster states

Journal Article · Fri Jul 15 04:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.012319· OSTI ID:20718327

Tame, M S; Paternostro, M; Kim, M S ^[1]; Vedral, V ^[2]

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1. School of Mathematics and Physics, The Queen's University, Belfast, BT7 1NN (United Kingdom)
2. Institute of Experimental Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna (Austria)

We provide an analysis of basic quantum-information processing protocols under the effect of intrinsic nonidealities in cluster states. These nonidealities 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.

• OSTI ID: 20718327
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
DATA PROCESSING
ENERGY LEVELS
IMPLEMENTATION
NOISE
QUANTUM COMPUTERS
QUANTUM ENTANGLEMENT
QUANTUM INFORMATION
QUANTUM MECHANICS
RANDOMNESS
SIMULATION