Comparison between non-Markovian dynamics with and without rotating wave approximation

doi:10.1088/1674-1056/22/3/030304

中国物理B ›› 2013, Vol. 22 ›› Issue (3): 30304-030304.doi: 10.1088/1674-1056/22/3/030304

Comparison between non-Markovian dynamics with and without rotating wave approximation

唐宁, 徐甜甜, 曾浩生

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics,Hunan Normal University, Changsha 410081, China

收稿日期:2012-07-11 修回日期:2012-08-20 出版日期:2013-02-01 发布日期:2013-02-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11275064 and 11075050), the National Basic Research Program of China (Grant No. 2007CB925204), and the Construct Program of the National Key Discipline, China.

Comparison between non-Markovian dynamics with and without rotating wave approximation

Tang Ning (唐宁), Xu Tian-Tian (徐甜甜), Zeng Hao-Sheng (曾浩生)

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics,Hunan Normal University, Changsha 410081, China

Received:2012-07-11 Revised:2012-08-20 Online:2013-02-01 Published:2013-02-01
Contact: Zeng Hao-Sheng E-mail:hszeng@hunnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11275064 and 11075050), the National Basic Research Program of China (Grant No. 2007CB925204), and the Construct Program of the National Key Discipline, China.

摘要/Abstract

摘要： In the limit of weak coupling between the system and its reservoir, we derive the time-convolutionless (TCL) non-Markovian master equation for a two-level system interacting with a zero-temperature structured environment with no rotating wave approximation (NRWA). By comparing with the dynamics with RWA, we demonstrate the impact of the RWA on the system dynamics, as well as the effects of non-Markovianity on the preservation of atomic coherence, squeezing, and entanglement.

关键词: open quantum system, rotating wave approximation, non-Markovianity

Abstract: In the limit of weak coupling between the system and its reservoir, we derive the time-convolutionless (TCL) non-Markovian master equation for a two-level system interacting with a zero-temperature structured environment with no rotating wave approximation (NRWA). By comparing with the dynamics with RWA, we demonstrate the impact of the RWA on the system dynamics, as well as the effects of non-Markovianity on the preservation of atomic coherence, squeezing, and entanglement.

Key words: open quantum system, rotating wave approximation, non-Markovianity

中图分类号: (Foundations of quantum mechanics; measurement theory)

03.65.Ta

03.65.Yz (Decoherence; open systems; quantum statistical methods) 42.50.Lc (Quantum fluctuations, quantum noise, and quantum jumps)

唐宁, 徐甜甜, 曾浩生. Comparison between non-Markovian dynamics with and without rotating wave approximation[J]. 中国物理B, 2013, 22(3): 30304-030304.

Tang Ning (唐宁), Xu Tian-Tian (徐甜甜), Zeng Hao-Sheng (曾浩生). Comparison between non-Markovian dynamics with and without rotating wave approximation[J]. Chin. Phys. B, 2013, 22(3): 30304-030304.

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Comparison between non-Markovian dynamics with and without rotating wave approximation

Comparison between non-Markovian dynamics with and without rotating wave approximation

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