Critical properties of entanglement in the Dicke model with the dipole-dipole interactions

被引:5
|
作者
Nie, J. [1 ]
Huang, X. L. [1 ]
Yi, X. X. [1 ]
机构
[1] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China
关键词
QUANTUM PHASE-TRANSITION; STATE; MATTER;
D O I
10.1016/j.optcom.2008.12.040
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this paper, we investigate two aspects of entanglement properties of the ground state for the Dicke model with the dipole-dipole interaction between the atoms in the thermodynamic limit, and observe how they are affected by the quantum phase transition. The appearance of dipole-dipole interactions between the atoms does not change the maximum atom-field entanglement at the critical point, while it changes the maximum atom-atom entanglement at the critical point, and has an important influence on the atom-atom entanglement behavior. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:1478 / 1481
页数:4
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