Entanglement and Sudden Death of a Nonlinear Two-Level-Atom Pair Interacting with a Radiation Field

被引：5
|
作者：
Abdalla, M. Sebawe [1 ]
Khalil, E. M. [2 ,3 ]
Ali, S. I. [2 ,3 ]
机构：
[1] King Saud Univ, Coll Sci, Dept Math, Riyadh 11451, Saudi Arabia
[2] Al Azhar Univ, Fac Sci, Dept Math, Cairo 11884, Egypt
[3] Hail Univ, Coll Sci, Dept Math, Hail, Saudi Arabia
来源：
JOURNAL OF RUSSIAN LASER RESEARCH | 2014年 / 35卷 / 04期
关键词：
atom-field interaction; entropy; entanglement; sudden death; CAVITY FIELD; ATOMS;
D O I：
10.1007/s10946-014-9442-3
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the entanglement between a pair of two-level atoms simultaneously interacting via a singlemode thermal field. The Hamiltonian also describes a two-photon process. The entanglement between a nonlinear atom-field interacting system is also studied using atomic and field entropy changes. We use concurrence to detect the sudden death phenomenon. Furthermore, we discuss the relationship between entropy changes and concurrence entanglement. Our results show that the behavior of the entropy change is in agreement with the behavior of the concurrence when we measure the entanglement between the two-subsystem structure.
引用
收藏
页码：408 / 415
页数：8
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