Entanglement and Quantum Discord Dynamics of Two Atoms in a Broadband Squeezed Vacuum Bath

被引：0
|
作者：
Liao, Xiang-Ping [1 ,2 ]
Fang, Jian-Shu [1 ,2 ]
Fang, Mao-Fa [3 ]
Liu, Bin [1 ,2 ]
Huang, Zhong [1 ,2 ]
机构：
[1] Hunan Univ Technol, Coll Sci, Zhuzhou 412008, Hunan, Peoples R China
[2] Hunan Univ Technol, Key Lab Green Packaging & Applicat Biol Nanotechn, Zhuzhou 412008, Hunan, Peoples R China
[3] Hunan Normal Univ, Coll Phys & Informat Sci, Changsha 410081, Hunan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2013年 / 52卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Quantum entanglement; Quantum discord; The squeezed vacuum reservoir;
D O I：
10.1007/s10773-012-1207-6
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the dynamics of entanglement and quantum discord between two two-level atoms that interact with a common squeezed reservoir. It is shown that the degree of entanglement and quantum discord are very sensitive to the degree of two-photon correlation for large values of the mean photon number. The squeezed vacuum environment can drive the system to a stationary state with high entanglement and quantum discord for certain X-type states. Furthermore, sudden change happens to the dynamics of quantum discord while the entanglement is remained almost unchanged.
引用
收藏
页码：1729 / 1739
页数：11
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