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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 |
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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.
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Received: 12 April 2009
Revised: 27 June 2009
Accepted manuscript online:
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PACS:
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32.80.Wr
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(Other multiphoton processes)
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42.50.Dv
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(Quantum state engineering and measurements)
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42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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| 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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