The effect of atomic spontaneous decay on the dynamics of the negativity of the Wigner function of radiation

A. Mohamed Abdel-Baset

doi:10.1088/1674-1056/20/9/090303

The effect of atomic spontaneous decay on the dynamics of the negativity of the Wigner function of radiation

A. Mohamed Abdel-Baset

Assiut University

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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.

Original language	English
Article number	090303
Journal	Chinese Physics B
Volume	20
Issue number	9
DOIs	https://doi.org/10.1088/1674-1056/20/9/090303
State	Published - Sep 2011
Externally published	Yes

Keywords

atomic decay
entanglement
non-classicality

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10.1088/1674-1056/20/9/090303

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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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AB - 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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KW - non-classicality

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The effect of atomic spontaneous decay on the dynamics of the negativity of the Wigner function of radiation

Abstract

Keywords

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