Environment induced entanglement in cavity-QED

被引：9

作者：

Nayak, N. ^{[3
]}

Ghosh, Biplab ^{[2
]}

Majumdar, A. S. ^{[1
]}

机构：

[1] SN Bose Natl Ctr Basic Sci, Kolkata 700098, India

[2] Metropolitan Inst Main, Kolkata 700006, India

[3] Birla Inst Technol, Dept Appl Phys, Mesra 835215, India

来源：

INDIAN JOURNAL OF PHYSICS | 2010年 / 84卷 / 08期

关键词：

Entanglement; tripartite system; INFORMATION-TRANSFER; QUANTUM; GENERATION; STATISTICS; STATE;

D O I：

10.1007/s12648-010-0098-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effects of dissipative dynamics on the magnitude of entanglement generated in atom-photon interactions inside cavities is studied. We present some concrete examples of environment induced entanglement in atom-photon interactions. We consider various dissipative atom-cavity systems and show that their collective dynamics can be used to maximize entanglement for intermediate values of the cavity leakage parameter kappa. We first consider the interaction of a single two-level atom with one of two coupled microwave cavities and show analytically that the atom-cavity entanglement increases with cavity leakage. We next consider a system of two atoms passing successively through a cavity and derive the expression for the maximum value of in terms of the Rabi angle gt, for which the two-atom entanglement can be increased. Finally, numerical investigation of micromaser dynamics also reveals the increase of two-atom entanglement with stronger cavity-environment coupling for experimentally attainable values of the micromaser parameters.

引用

页码：1039 / 1050

页数：12

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