Decoherence effects on the quantum spin channels
Quantum Physics
2007-05-23 v3
Abstract
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.
Cite
@article{arxiv.quant-ph/0603228,
title = {Decoherence effects on the quantum spin channels},
author = {Jian-Ming Cai and Zheng-Wei Zhou and Guang-Can Guo},
journal= {arXiv preprint arXiv:quant-ph/0603228},
year = {2007}
}
Comments
Revised version accepted in PRA