中国物理B ›› 2010, Vol. 19 ›› Issue (2): 20309-020309.doi: 10.1088/1674-1056/19/2/020309

• GENERAL • 上一篇    下一篇

The entanglement of two moving atoms interacting with a single-mode field via a three-photon process

吴超, 方卯发   

  1. College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
  • 收稿日期:2009-04-12 修回日期:2009-06-27 出版日期:2010-02-15 发布日期:2010-02-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No.~10374025), the Natural Science Foundation of Hunan Province (Grant Nos.~07JJ3013 and 07JJ5003), and the Research Foundation of the Education Bureau of Hunan Province (Grant No.~06A038).

The entanglement of two moving atoms interacting with a single-mode field via a three-photon process

Wu Chao(吴超) and Fang Mao-Fa(方卯发)   

  1. College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
  • Received:2009-04-12 Revised:2009-06-27 Online:2010-02-15 Published:2010-02-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No.~10374025), the Natural Science Foundation of Hunan Province (Grant Nos.~07JJ3013 and 07JJ5003), and the Research Foundation of the Education Bureau of Hunan Province (Grant No.~06A038).

摘要: In this paper, the entanglement of two moving atoms induced by a single-mode field via a three-photon process is investigated. It is shown that the entanglement is dependent on the category of the field, the average photon number N, the number p of half-wave lengths of the field mode and the atomic initial state. Also, the sudden death and the sudden birth of the entanglement are detected in this model and the results show that the existence of the sudden death and the sudden birth depends on the parameter and the category of the mode field. In addition, the three-photon process is a higher order nonlinear process.

Abstract: In this paper, the entanglement of two moving atoms induced by a single-mode field via a three-photon process is investigated. It is shown that the entanglement is dependent on the category of the field, the average photon number N, the number p of half-wave lengths of the field mode and the atomic initial state. Also, the sudden death and the sudden birth of the entanglement are detected in this model and the results show that the existence of the sudden death and the sudden birth depends on the parameter and the category of the mode field. In addition, the three-photon process is a higher order nonlinear process.

Key words: induced entanglement, three-photon process, sudden death and sudden birth

中图分类号:  (Other multiphoton processes)

  • 32.80.Wr
42.50.Dv (Quantum state engineering and measurements) 42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift) 03.67.Mn (Entanglement measures, witnesses, and other characterizations)