Quantum-state transfer on spin-chain channels with random imperfection

Details Quantum-state transfer on spin-chain channels with random imperfection Quantum-state transfer on spin-chain channels with random imperfection

2009-02-14

arxiv.org/abs/0902.2432v3

Physics

Quantum Physics

26 pages, 11 figures

Scientific paper

We investigate the quantum-state transfer on spin-chian channels with random imperfections.Through combining the advantages of two known schemes, the dual-rail spin-chain channels[9] and the particular ihhomogenous spin-chain channel[10], we propose a protocol that can avoid the quantum noises introduced by many unnecessary measurements and can enhance the anti-decoherence ability. The results show that our protocol is more efficient to transfer an arbitrary quantum state than the original one. In particular, we discuss the effects of couplings fluctuations and imperfect initialization on both of the improved scheme and original one.

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