中国物理B ›› 2007, Vol. 16 ›› Issue (8): 2407-2414.doi: 10.1088/1009-1963/16/8/042

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Atomic coherence control on the entanglement of two atoms in two-photon processes

胡要花1, 方卯发2, 吴琴2   

  1. (1)College of Physics and Information Science, Hunan Normal University, Changsha 410081, China; (2)School of Basic Medical Science, Guangdong Medical College, Dongguan 523808, China
  • 收稿日期:2006-10-28 修回日期:2006-11-14 出版日期:2007-08-20 发布日期:2007-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10374025).

Atomic coherence control on the entanglement of two atoms in two-photon processes

Hu Yao-Hua(胡要花)a), Fang Mao-Fa(方卯发)b)†, and Wu Qin(吴琴)b)   

  1. a College of Physics and Information Science, Hunan Normal University, Changsha 410081, China; b School of Basic Medical Science, Guangdong Medical College, Dongguan 523808, China
  • Received:2006-10-28 Revised:2006-11-14 Online:2007-08-20 Published:2007-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10374025).

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摘要： Considering two identical two-level atoms interacting with a single-mode thermal field through two-photon processes, this paper studies the atomic coherence control on the entanglement between two two-level atoms, and finds that the entanglement is greatly enhanced due to the initial atomic coherence. The results show that the entanglement can be manipulated by changing the initial parameters of the system, such as the superposition coefficients and the relative phases of the initial atomic coherent state and the mean photon number of the cavity field.

Abstract: Considering two identical two-level atoms interacting with a single-mode thermal field through two-photon processes, this paper studies the atomic coherence control on the entanglement between two two-level atoms, and finds that the entanglement is greatly enhanced due to the initial atomic coherence. The results show that the entanglement can be manipulated by changing the initial parameters of the system, such as the superposition coefficients and the relative phases of the initial atomic coherent state and the mean photon number of the cavity field.

Key words: entanglement, single-mode thermal field, atomic coherence

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)