Qubit disentanglement in local squeezed reservoirs

被引：10

作者：

Zhou, Xiang-Fa ^{[1
]}

Zhang, Yong-Sheng ^{[1
]}

Guo, Guang-Can ^{[1
]}

机构：

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

来源：

PHYSICS LETTERS A | 2007年 / 363卷 / 04期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.physleta.2006.11.012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the influence of the local squeezed vacuum fields on two initially entangled two-qubit system. By considering the upper bound of entanglement under time evolution, we find that the decay of the quantum entanglement shows different behavior for different time scales (t >> max{(2 beta(A))(-1), (2 beta(B))(-1)} and t << min{(2 beta(A))(-1), (2 beta(B))(-1)}). The relative phase of the squeezing environment can also affect the entanglement dynamics profoundly. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：263 / 270

页数：8

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