Dynamics of entanglement in two-qubit open system interacting with a squeezed thermal bath via dissipative interaction

被引：35
|
作者：
Banerjee, Subhashish [2 ,3 ]
Ravishankar, V. [2 ,4 ]
Srikanth, R. [1 ,2 ]
机构：
[1] Poornaprajna Inst Sci Res, Bangalore 560080, Karnataka, India
[2] Raman Res Inst, Bangalore 560080, Karnataka, India
[3] Chennai Math Inst, Siruseri 603103, India
[4] Indian Inst Technol, Kanpur 208016, Uttar Pradesh, India
来源：
ANNALS OF PHYSICS | 2010年 / 325卷 / 04期
关键词：
Entanglement dynamics; Dissipative system-bath interaction; QUANTUM STATES; SUDDEN-DEATH; DECOHERENCE; TELEPORTATION; REPEATERS;
D O I：
10.1016/j.aop.2010.01.003
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the dynamics of entanglement in a two-qubit system interacting with a squeezed thermal bath via a dissipative system-reservoir interaction with the system and reservoir assumed to be in a separable initial state. The resulting entanglement is studied by making use of concurrence as well as a recently introduced measure of mixed state entanglement via a probability density function which gives a statistical and geometrical characterization of entanglement by exploring the entanglement content in the various subspaces spanning the two-qubit Hilbert space. We also make an application of the two-qubit dissipative dynamics to a simplified model of quantum repeaters. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码：816 / 834
页数：19
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