Long-distance quantum communication in a decoherence-free subspace

被引：9
|
作者：
Xue, Peng [1 ]
机构：
[1] Univ Calgary, Inst Quantum Informat Sci, Calgary, AB T2N 1N4, Canada
来源：
PHYSICS LETTERS A | 2008年 / 372卷 / 46期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1016/j.physleta.2008.10.018
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We show how to realize long-distance quantum communication using a long-lived quantum memory, which is embedded in a decoherence-free subspace (DFS). Neutral atoms were used in the present scheme, whose interactions are catalyzed by single photons or weak coherent light. The generation, purification and swapping of logical entangled states are performed with help of cavity-assisted photon scattering which is robust to random variation in the atom-photon coupling rate. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：6859 / 6866
页数：8
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