Entanglement and non-Markovianity of a multi-level atom decaying in a cavity

doi:10.1088/1674-1056/25/1/010303

Abstract We present a paradigmatic method for exactly studying non-Markovian dynamics of a multi-level V-type atom interacting with a zero-temperature bosonic bath. Special attention is paid to the entanglement evolution and the dynamical non-Markovianity of a three-level V-type atom. We find that the entanglement negativity decays faster and non-Markovianity is smaller in the resonance regions than those in the non-resonance regions. More importantly, the quantum interference between the dynamical non-Markovianities induced by different transition channels is manifested, and the frequency domains for constructive and destructive interferences are found.

Keywords: entanglement negativity non-Markovianity quantum interference

Received: 23 July 2015
Revised: 16 September 2015
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 Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20124306110003), and the Construct Program of the National Key Discipline, China.

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

Cite this article:

Zi-Long Fan(范子龙), Yu-Kun Ren(任玉坤), Hao-Sheng Zeng(曾浩生) Entanglement and non-Markovianity of a multi-level atom decaying in a cavity 2016 Chin. Phys. B 25 010303

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