Decoherence effects on the quantum spin channels

被引：59

作者：

Cai, Jian-Ming ^{[1
]}

Zhou, Zheng-Wei ^{[1
]}

Guo, Guang-Can ^{[1
]}

机构：

[1] Univ Sci & Technol China, Key Lab Quantum Informat, Hefei 230026, Anhui, Peoples R China

来源：

PHYSICAL REVIEW A | 2006年 / 74卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.74.022328

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An open ended spin chain can serve 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.

引用

页数：6

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