ENTANGLEMENT DYNAMICS OF THREE-QUBIT STATES UNDER A SPIN ENVIRONMENT

被引：2

作者：

Ma, Xiao San ^{[1
]}

Liu, Gao Sheng ^{[1
]}

Wang, An Min ^{[2
]}

机构：

[1] Anhui Univ Technol, Sch Elect Engn & Informat, Maanshan 243002, Peoples R China

[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China

来源：

INTERNATIONAL JOURNAL OF QUANTUM INFORMATION | 2011年 / 9卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Entanglement dynamics; decoherence; spin environment;

D O I：

10.1142/S0219749911006739

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

In this paper, we investigate the entanglement dynamics of three-qubit states under a spin environment. From the analysis, we find that the entanglement dynamics of the three-qubit states depends not only on the coupling strength between the system and the environment and the number of degrees of freedom of the environment but also on the tunneling matrix elements of the spin environment and the specific state of concern. Specifically, the entanglement dynamics of the GHZ state, the W state, and the Werner state have been analyzed in detail and the conditions to identify the decoherence-free subspaces of our model have been discussed.

引用

页码：791 / 800

页数：10

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