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

作者：Zhang Yu-Qing; Huang Gang; Tan Lei^*

来源：Chinese Physics B, 2012, 21(2): 023701.

DOI：10.1088/1674-1056/21/2/023701

• V-type three-level atom
• high finesse optical cavity
• dipole force
• strong coupling condition

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 delta, of which the value is 10(-3) similar to 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.

• 出版日期2012-2
• 单位兰州大学