Generation of sustained optimal entropy squeezing of a two-level atom via non-Hermitian operation

被引：13
|
作者：
Wang, Yan-Yi
Fang, Mao-Fa [1 ]
机构：
[1] Hunan Normal Univ, Synerget Innovat Ctr Quantum Effects & Applicat, Changsha 410081, Hunan, Peoples R China
来源：
CHINESE PHYSICS B | 2018年 / 27卷 / 11期
基金：
中国国家自然科学基金;
关键词：
entropy squeezing; non-Hermitian dynamics; quantum optics; Jaynes-Cummings model; ENTANGLEMENT; HAMILTONIANS;
D O I：
10.1088/1674-1056/27/11/114207
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the entropy squeezing of a two-level atom in the Jaynes-Cummings model, and provide a scheme to generate the sustained optimal entropy squeezing of the atom via non-Hermitian operation. Our results show that the squeezing degree and the persistence time of entropy squeezing of atomic polarization components greatly depend on the non-Hermiticity intensity in non-Hermitian operation. Especially, under a proper choice of non-Hermiticity parameters, the sustained optimal entropy squeezing of the atom can be generated even though the atom is initially prepared in a no entropy squeezing state.
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页数：6
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