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The effect of atomic spontaneous decay on the dynamics of the negativity of the Wigner function of radiation |
| Abdel-Baset A. Mohamed† |
| Faculty of Science, Assiut University, Assiut, Egypt |
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Abstract The exact solution of the master equation for the case of a high-Q cavity with atomic decay is found. We use the negativity of the Wigner function (WF) as an indicator of nonclassicality. It is found that the negative values of the field WF are very sensitive to any change in the damping parameter. The atomic spontaneous decay leads to the simultaneous disappearance of both entanglement and nonclassicality of quantum states. Moreover, the purity of the field states is completely lost.
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Received: 04 March 2011
Revised: 14 April 2011
Accepted manuscript online:
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PACS:
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03.65.Ud
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(Entanglement and quantum nonlocality)
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42.50.Lc
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(Quantum fluctuations, quantum noise, and quantum jumps)
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Cite this article:
Abdel-Baset A. Mohamed The effect of atomic spontaneous decay on the dynamics of the negativity of the Wigner function of radiation 2011 Chin. Phys. B 20 090303
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