The effect of a permanent dipole moment on the polar molecule cavity quantum electrodynamics |
| |
| Affiliation: | 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 |
| |
| 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. |
| |
| Keywords: | dressed-state perturbation theory permanent dipole moment counter-rotating wave term Bloch-Siegert shift |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |
|
