中国物理B ›› 2012, Vol. 21 ›› Issue (2): 23701-023701.doi: 10.1088/1674-1056/21/2/023701

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张玉青1,黄刚1,谭磊1 2   

  • 收稿日期:2011-01-08 修回日期:2011-06-30 出版日期:2012-01-30 发布日期:2012-01-30
  • 通讯作者: 谭磊,tanlei@lzu.edu.cn E-mail:tanlei@lzu.edu.cn

Demonstration of the approximation of eliminating atomic excited populations in an atom–cavity system

Zhang Yu-Qing(张玉青)a), Huang Gang(黄刚) a), and Tan Lei(谭磊)a)b)†   

  1. a. Institute of Theoretical Physics, Lanzhou University, Lanzhou 730070, China;
    b. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, China
  • Received:2011-01-08 Revised:2011-06-30 Online:2012-01-30 Published:2012-01-30
  • Contact: Tan Lei,tanlei@lzu.edu.cn E-mail:tanlei@lzu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10704031) and the Fundamental Research Funds for the Central Universities, China (Grant No. lzujbky-2010-75).

Abstract: Using the master equation approach to a V-type three-level atom inside a high-finesse single-mode cavity in the strong coupling condition, we demonstrate the approximation of eliminating populations of atomic excited states, which is widely used in the field of the atom-cavity systems [Hechenblaikner G, Gangl M, Horak P and Ritsch H 1998 Phys. Rev. A 58 3030]; Liu L W, Tan T and Xu Y 2008 J. Mod. Opt. 56 968; Cho J, Angelakis D G and Bose S 2008 Phys. Rev. A 78 062338. This is reflected in the deviation of the population δ, of which the value is 10-3~10-2. We further find the deviation of the dipole force and demonstrate that the deviation of atomic population will not notably affect the dipole force of the atom in the strong coupling condition. A relevant experimental case is also presented.

Key words: V-type three-level atom, high finesse optical cavity, dipole force, strong coupling condition

中图分类号:  (Atoms, molecules, andions incavities)

  • 37.30.+i
42.50.Ct (Quantum description of interaction of light and matter; related experiments) 42.50.Wk (Mechanical effects of light on material media, microstructures and particles)