Non-Markovian speedup dynamics control of the damped Jaynes-Cummings model with detuning

doi:10.1088/1674-1056/27/1/010302

中国物理B ›› 2018, Vol. 27 ›› Issue (1): 10302-010302.doi: 10.1088/1674-1056/27/1/010302

Non-Markovian speedup dynamics control of the damped Jaynes-Cummings model with detuning

Kai Xu(徐凯), Wei Han(韩伟), Ying-Jie Zhang(张英杰), Heng Fan(范桁)

1 Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, China;
2 Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
3 Collaborative Innovation Center of Quantum Matter, Beijing 100190, China

收稿日期:2017-09-14 修回日期:2017-10-16 出版日期:2018-01-05 发布日期:2018-01-05
通讯作者: Ying-Jie Zhang E-mail:yingjiezhang@mail.qfnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11647171, 61675115, and 91536108).

Non-Markovian speedup dynamics control of the damped Jaynes-Cummings model with detuning

Kai Xu(徐凯)^1,2, Wei Han(韩伟)¹, Ying-Jie Zhang(张英杰)¹, Heng Fan(范桁)^2,3

1 Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, China;
2 Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
3 Collaborative Innovation Center of Quantum Matter, Beijing 100190, China

Received:2017-09-14 Revised:2017-10-16 Online:2018-01-05 Published:2018-01-05
Contact: Ying-Jie Zhang E-mail:yingjiezhang@mail.qfnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11647171, 61675115, and 91536108).

摘要/Abstract

摘要： For a two-level atom in a lossy cavity, a scheme to manipulate the non-Markovian speedup dynamics has been proposed in the controllable environment (the lossy cavity field). We mainly focus on the effects of the qubit-cavity detuning △ and the qubit-cavity coupling strength κ on the non-Markovian speedup evolution of an open system. By controlling the environment, i.e., tuning △ and κ, two dynamical crossovers from Markovian to non-Markovian and from no-speedup to speedup are achieved. Furthermore, it is clearly found that increasing the coupling strength κ or detuning △ in some cases can make the environmental non-Markovianity stronger and hence can lead to faster evolution of the open system.

关键词: non-Markovianity, quantum speed limits, open system dynamics

Abstract: For a two-level atom in a lossy cavity, a scheme to manipulate the non-Markovian speedup dynamics has been proposed in the controllable environment (the lossy cavity field). We mainly focus on the effects of the qubit-cavity detuning △ and the qubit-cavity coupling strength κ on the non-Markovian speedup evolution of an open system. By controlling the environment, i.e., tuning △ and κ, two dynamical crossovers from Markovian to non-Markovian and from no-speedup to speedup are achieved. Furthermore, it is clearly found that increasing the coupling strength κ or detuning △ in some cases can make the environmental non-Markovianity stronger and hence can lead to faster evolution of the open system.

Key words: non-Markovianity, quantum speed limits, open system dynamics

中图分类号: (Decoherence; open systems; quantum statistical methods)

03.65.Yz

03.67.-a (Quantum information)

徐凯, 韩伟, 张英杰, 范桁. Non-Markovian speedup dynamics control of the damped Jaynes-Cummings model with detuning[J]. 中国物理B, 2018, 27(1): 10302-010302.

Kai Xu(徐凯), Wei Han(韩伟), Ying-Jie Zhang(张英杰), Heng Fan(范桁). Non-Markovian speedup dynamics control of the damped Jaynes-Cummings model with detuning[J]. Chin. Phys. B, 2018, 27(1): 10302-010302.

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Non-Markovian speedup dynamics control of the damped Jaynes-Cummings model with detuning

Non-Markovian speedup dynamics control of the damped Jaynes-Cummings model with detuning

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