Toward a more economical cluster state quantum computation

Details Toward a more economical cluster state quantum computation Toward a more economical cluster state quantum computation

2004-12-20

arxiv.org/abs/quant-ph/0412156v2

International Journal of Quantum Information, Vol. 4, No. 4 (2006) 689-703

Physics

Quantum Physics

4 pages, 2 figures, RevTeX4; proposal for experimental setup included

Scientific paper

We assess the effects of an intrinsic model for imperfections in cluster states by introducing {\it noisy cluster states} and characterizing their role in the one-way model for quantum computation. The action of individual dephasing channels on cluster qubits is also studied. We show that the effect of non-idealities is limited by using small clusters, which requires compact schemes for computation. In light of this, we address an experimentally realizable four-qubit linear cluster which simulates a controlled-{\sf NOT} ({\sf CNOT}).

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