Wigner Function of Thermo-Invariant Coherent State

Chin. Phys. Lett.

2008, Vol. 25

Issue (8): 2762-2764 DOI:

Original Articles

Wigner Function of Thermo-Invariant Coherent State

XU Xue-Fen^1,2, ZHU Shi-Qun¹

¹School of Physical Science and Technology, Suzhou University, Suzhou 215006²School of Mathematics and Physics, Jiangsu Teachers University of Technology, Changzhou 213001

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XU Xue-Fen, ZHU Shi-Qun 2008 Chin. Phys. Lett. 25 2762-2764

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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, N>is derived. The nonclassical properties of state |z, N> is discussed based on the negativity of the Wigner function.

Keywords: 03.65.-w 03.65.Ca

Received: 12 May 2008 Published: 25 July 2008

PACS:	03.65.-w	(Quantum mechanics)
	03.65.Ca	(Formalism)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2008/V25/I8/02762

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