Chinese Physics Letters

Wigner Function of Thermo-Invariant Coherent State

Xuefen Xu, Zhu Shi-Qun

Published Jul 29, 2008• 9 citations

Abstract

By using the thermal Winger operator of thermo-field dynamics in the coherent thermal state |ξ) representation and the technique of integration within an ordered product of operators, the Wigner function of the thermo-invariant coherent state |z,ℵ〉 is derived. The nonclassical properties of state |z,ℵ〉 is discussed based on the negativity of the Wigner function.

DOI: 10.1088/0256-307x/25/8/008

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