Decoherence effects on the quantum spin channels

Details Decoherence effects on the quantum spin channels Decoherence effects on the quantum spin channels

2006-03-25

arxiv.org/abs/quant-ph/0603228v3

Phys. Rev. A. 74, 022328 (2006).

Physics

Quantum Physics

Revised version accepted in PRA

Scientific paper

10.1103/PhysRevA.74.022328

An open ended spin chain can serves as a quantum data bus for the coherent transfer of quantum state information. In this paper, we investigate the efficiency of such quantum spin channels which work in a decoherence environment. Our results show that, the decoherence will significantly reduce the fidelity of quantum communication through the spin channels. Generally speaking, as the distance increases, the decoherence effects become more serious, which will put some constraints on the spin chains for long distance quantum state transfer.

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