The squeezing dynamics of two independent atoms by detuning in two non-Markovian environments

被引:15
作者
Zou Hong-Mei
Fang Mao-Fa [1 ]
Yang Bai-Yuan
机构
[1] Hunan Normal Univ, Minist Educ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Changsha 410081, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
non-Markovian effect; detuning; squeezing; two-level atom; CONTINUOUS VARIABLE SYSTEMS; QUANTUM; ENTANGLEMENT; CRITERION;
D O I
10.1088/1674-1056/22/12/120303
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The squeezing dynamics of two independent two-level atoms off-resonantly coupled to two non-Markovian reservoirs is studied by the time-convolutionless master-equation approach. We find that the squeezing of two atoms is dependent on both detuning and the non-Markovian effect. Our results show that, in the non-Markovian regime, the bigger the detuning and the stronger the non-Markovian effect are, the larger the strength of the squeezing is. And the squeezing of two atoms can be effectively protected for a long time when both the non-Markovian effect and detuning are present simultaneously. The physical mechanism is that the detuning not only can promote the feedback of information from the environment into the atomic system but also can greatly suppress the atomic decay in the non-Markovian regime.
引用
收藏
页数:5
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