Classical-driving-assisted coherence dynamics and its conservation

doi:10.1088/1674-1056/27/6/060304

Abstract We investigate the quantum coherence and quantum entanglement dynamics of a classical driven single atom coupled to a single-mode cavity. It is shown that the transformation between the atomic coherence and the atom-field entanglement exists, and can be improved by adjusting the classical driving field. The joint evolution of two identical single-body systems is also studied. The results show the quantum coherence transfers among composite subsystems, and the coherence conservation of composite subsystems is obtained. Moreover, the classical driving field can be used to suppress the decay of the coherence and entanglement, owing to considering the leaky cavity. The non-Markovian dynamics of the system is also discussed finally.

Keywords: quantum coherence classical driving field decoherence

Received: 20 December 2017
Revised: 16 March 2018
Accepted manuscript online:

PACS:	03.67.-a	(Quantum information)
	03.65.-w	(Quantum mechanics)
	03.65.Yz	(Decoherence; open systems; quantum statistical methods)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos.61675115,11204156,11574178,and 11304179),the Science and Technology Plan Projects of Shandong University,China (Grant No.J16LJ52),and the Natural Science Foundation of Shandong Province,China (Grant No.ZR2016AP09).

Corresponding Authors: Yun-Jie Xia
E-mail: yjxia@mail.qfnu.edu.cn

Cite this article:

De-Ying Gao(高德营), Qiang Gao(高强), Yun-Jie Xia(夏云杰) Classical-driving-assisted coherence dynamics and its conservation 2018 Chin. Phys. B 27 060304

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