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

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

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.

Keywords: open quantum system rotating wave approximation non-Markovianity

Received: 11 July 2012
Revised: 20 August 2012
Accepted manuscript online:

PACS:	03.65.Ta	(Foundations of quantum mechanics; measurement theory)
	03.65.Yz	(Decoherence; open systems; quantum statistical methods)
	42.50.Lc	(Quantum fluctuations, quantum noise, and quantum jumps)

Fund: 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.

Corresponding Authors: Zeng Hao-Sheng
E-mail: hszeng@hunnu.edu.cn

Cite this article:

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 2013 Chin. Phys. B 22 030304

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