Classical-driving-assisted coherence dynamics and its conservation

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

中国物理B ›› 2018, Vol. 27 ›› Issue (6): 60304-060304.doi: 10.1088/1674-1056/27/6/060304

Classical-driving-assisted coherence dynamics and its conservation

De-Ying Gao(高德营), Qiang Gao(高强), Yun-Jie Xia(夏云杰)

1 Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, China;
2 College of Dong Chang, Liaocheng University, Liaocheng 252000, China

收稿日期:2017-12-20 修回日期:2018-03-16 出版日期:2018-06-05 发布日期:2018-06-05
通讯作者: Yun-Jie Xia E-mail:yjxia@mail.qfnu.edu.cn
基金资助:
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).

Classical-driving-assisted coherence dynamics and its conservation

De-Ying Gao(高德营)^1,2, Qiang Gao(高强)¹, Yun-Jie Xia(夏云杰)¹

1 Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, China;
2 College of Dong Chang, Liaocheng University, Liaocheng 252000, China

Received:2017-12-20 Revised:2018-03-16 Online:2018-06-05 Published:2018-06-05
Contact: Yun-Jie Xia E-mail:yjxia@mail.qfnu.edu.cn
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: quantum coherence, classical driving field, decoherence

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.

Key words: quantum coherence, classical driving field, decoherence

中图分类号: (Quantum information)

03.67.-a

03.65.-w (Quantum mechanics) 03.65.Yz (Decoherence; open systems; quantum statistical methods)

高德营, 高强, 夏云杰. Classical-driving-assisted coherence dynamics and its conservation[J]. 中国物理B, 2018, 27(6): 60304-060304.

De-Ying Gao(高德营), Qiang Gao(高强), Yun-Jie Xia(夏云杰). Classical-driving-assisted coherence dynamics and its conservation[J]. Chin. Phys. B, 2018, 27(6): 60304-060304.

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Classical-driving-assisted coherence dynamics and its conservation

Classical-driving-assisted coherence dynamics and its conservation

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