中国物理B ›› 2016, Vol. 25 ›› Issue (4): 44202-044202.doi: 10.1088/1674-1056/25/4/044202

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

The effect of a permanent dipole moment on the polar molecule cavity quantum electrodynamics

Jing-Yun Zhao(赵晶云), Li-Guo Qin(秦立国), Xun-Ming Cai(蔡勋明), Qiang Lin(林强), Zhong-Yang Wang(王中阳)   

  1. 1 Institute of Optics, Department of Physics, Zhejiang University, Hangzhou 310027, China;
    2 Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;
    3 School of Science, Zhejiang Sci.-Tech. University, Hangzhou 310018, China;
    4 Center for Optics and Optoelectronics Research, Department of Applied Physics, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
  • 收稿日期:2015-09-15 修回日期:2015-12-02 出版日期:2016-04-05 发布日期:2016-04-05
  • 通讯作者: Li-Guo Qin, Zhong-Yang Wang E-mail:qinlg@sari.ac.cn;wangzy@sari.ac.cn

The effect of a permanent dipole moment on the polar molecule cavity quantum electrodynamics

Jing-Yun Zhao(赵晶云)1,2,3, Li-Guo Qin(秦立国)2, Xun-Ming Cai(蔡勋明)1, Qiang Lin(林强)1,4, Zhong-Yang Wang(王中阳)2   

  1. 1 Institute of Optics, Department of Physics, Zhejiang University, Hangzhou 310027, China;
    2 Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;
    3 School of Science, Zhejiang Sci.-Tech. University, Hangzhou 310018, China;
    4 Center for Optics and Optoelectronics Research, Department of Applied Physics, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
  • Received:2015-09-15 Revised:2015-12-02 Online:2016-04-05 Published:2016-04-05
  • Contact: Li-Guo Qin, Zhong-Yang Wang E-mail:qinlg@sari.ac.cn;wangzy@sari.ac.cn

摘要: A dressed-state perturbation theory beyond the rotating wave approximation (RWA) is presented to investigate the interaction between a two-level electronic transition of polar molecules and a quantized cavity field. Analytical expressions can be explicitly derived for both the ground-and excited-state-energy spectrums and wave functions of the system, where the contribution of permanent dipole moments (PDM) and the counter-rotating wave term (CRT) can be shown separately. The validity of these explicit results is discussed by comparison with the direct numerical simulation. Compared to the CRT coupling, PDM results in the coupling of more dressed states and the energy shift is proportional to the square of the normalized permanent dipole difference, and a greater Bloch-Siegert shift can be produced in the giant dipole molecule cavity QED. In addition, our method can also be extended to the solution of the two-level atom Rabi model Hamiltonian beyond the RWA.

关键词: dressed-state perturbation theory, permanent dipole moment, counter-rotating wave term, Bloch-Siegert shift

Abstract: A dressed-state perturbation theory beyond the rotating wave approximation (RWA) is presented to investigate the interaction between a two-level electronic transition of polar molecules and a quantized cavity field. Analytical expressions can be explicitly derived for both the ground-and excited-state-energy spectrums and wave functions of the system, where the contribution of permanent dipole moments (PDM) and the counter-rotating wave term (CRT) can be shown separately. The validity of these explicit results is discussed by comparison with the direct numerical simulation. Compared to the CRT coupling, PDM results in the coupling of more dressed states and the energy shift is proportional to the square of the normalized permanent dipole difference, and a greater Bloch-Siegert shift can be produced in the giant dipole molecule cavity QED. In addition, our method can also be extended to the solution of the two-level atom Rabi model Hamiltonian beyond the RWA.

Key words: dressed-state perturbation theory, permanent dipole moment, counter-rotating wave term, Bloch-Siegert shift

中图分类号:  (Cavity quantum electrodynamics; micromasers)

  • 42.50.Pq
02.30.Mv (Approximations and expansions) 33.80.-b (Photon interactions with molecules)