Acta Sinica Quantum Optica
The Applications of Coherent State Representation on the Distribution Functions of the Quantum Phase Space
Shuai Wang
Abstract
By means of the coherent state representation and the IWOP technique,the density matrix of free thermal state can be written as normal product form.And then the Wigner function of free thermal state and the thermal coherent state are reproduced by using the wigner function in coherent state representation.It is found that it is easy to obtain the Wigner function of some quantum states by using the Wigner function defined in terms of the coherent state and the normal product form of operators.