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Chin. Phys. B, 2010, Vol. 19(2): 020309    DOI: 10.1088/1674-1056/19/2/020309
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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)
College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
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.
Keywords:  induced entanglement      three-photon process      sudden death and sudden birth  
Received:  12 April 2009      Revised:  27 June 2009      Accepted manuscript online: 
PACS:  32.80.Wr (Other multiphoton processes)  
  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)  
Fund: 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).

Cite this article: 

Wu Chao(吴超) and Fang Mao-Fa(方卯发) The entanglement of two moving atoms interacting with a single-mode field via a three-photon process 2010 Chin. Phys. B 19 020309

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