中国物理B ›› 2018, Vol. 27 ›› Issue (11): 114207-114207.doi: 10.1088/1674-1056/27/11/114207

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Generation of sustained optimal entropy squeezing of a two-level atom via non-Hermitian operation

Yan-Yi Wang(王彦懿), Mao-Fa Fang(方卯发)   

  1. Synergetic Innovation Center for Quantum Effects and Application, and Key Laboratory of Low-Dimensional Quantum Structures andQuantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, China
  • 收稿日期:2018-06-03 修回日期:2018-08-20 出版日期:2018-11-05 发布日期:2018-11-05
  • 通讯作者: Mao-Fa Fang E-mail:mffang@hunnu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 11374096).

Generation of sustained optimal entropy squeezing of a two-level atom via non-Hermitian operation

Yan-Yi Wang(王彦懿), Mao-Fa Fang(方卯发)   

  1. Synergetic Innovation Center for Quantum Effects and Application, and Key Laboratory of Low-Dimensional Quantum Structures andQuantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, China
  • Received:2018-06-03 Revised:2018-08-20 Online:2018-11-05 Published:2018-11-05
  • Contact: Mao-Fa Fang E-mail:mffang@hunnu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 11374096).

摘要:

We investigate the entropy squeezing of a two-level atom in the Jaynes-Cummings model, and provide a scheme to generate the sustained optimal entropy squeezing of the atom via non-Hermitian operation. Our results show that the squeezing degree and the persistence time of entropy squeezing of atomic polarization components greatly depend on the non-Hermiticity intensity in non-Hermitian operation. Especially, under a proper choice of non-Hermiticity parameters, the sustained optimal entropy squeezing of the atom can be generated even though the atom is initially prepared in a no entropy squeezing state.

关键词: entropy squeezing, non-Hermitian dynamics, quantum optics, Jaynes-Cummings model

Abstract:

We investigate the entropy squeezing of a two-level atom in the Jaynes-Cummings model, and provide a scheme to generate the sustained optimal entropy squeezing of the atom via non-Hermitian operation. Our results show that the squeezing degree and the persistence time of entropy squeezing of atomic polarization components greatly depend on the non-Hermiticity intensity in non-Hermitian operation. Especially, under a proper choice of non-Hermiticity parameters, the sustained optimal entropy squeezing of the atom can be generated even though the atom is initially prepared in a no entropy squeezing state.

Key words: entropy squeezing, non-Hermitian dynamics, quantum optics, Jaynes-Cummings model

中图分类号:  (Quantum optics)

  • 42.50.-p
03.67.Lx (Quantum computation architectures and implementations) 03.67.-a (Quantum information)