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Sudden Death of Entanglement between Two Atoms with Initial Tripartite Entangled State in the Tavis--Cummings Model |
| YANG Qing1;YANG Ming1;CAO Zhuo-Liang 1,2 |
| 1Key Laboratory of Opto-electronic Information Acquisition and Manipulation (Ministry of Education), School of Physics and Material Science, Anhui University, Hefei 2300392Department of Physics, Hefei Teachers College, Hefei 230061 |
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| Cite this article: |
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YANG Qing, YANG Ming, CAO Zhuo-Liang 2008 Chin. Phys. Lett. 25 825-827 |
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Abstract We study the entanglement dynamics of two atoms with initial tripartite entangled W-like state in the Tavis--Cummings model. We find that the entanglement evolvement is sensitive not only to the entanglement degree of the initial state but also to the concrete form of the initial state. The so-called
sudden death effect occurs only for some initial states.
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| Keywords:
03.65.Yz
03.65.Ud
03.67.Mn
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Received: 23 October 2007
Published: 27 February 2008
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| PACS: |
03.65.Yz
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(Decoherence; open systems; quantum statistical methods)
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03.65.Ud
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(Entanglement and quantum nonlocality)
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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