Damping in a Squeezed Bath and Its Time Evolution through the Complete Class of Gaussian Quasi-Distributions  

作　　者：Mohammad Reza Bazrafkan Seyed Mahmoud Ashrafi Fahimeh Naghdi 

机构地区：[1]Physics Department, Faculty of Science, Imam Khomeini International University, Qazvin, Iran

出　　处：《Chinese Physics Letters》2014年第7期20-23,共4页中国物理快报（英文版）

摘　　要：By virtue of the thermo-entangled states representation of the density operator and using the dissipative interaction picture, we solve the master equation of a driven damped harmonic oscillator in a squeezed bath. We show that the essential part of the dynamics can be expressed by the convolution of the initial Wigner function with a special kind of normalized Gaussian in the phase space and relate the dynamics with the change of Gaussian ordering of the density operator.By virtue of the thermo-entangled states representation of the density operator and using the dissipative interaction picture, we solve the master equation of a driven damped harmonic oscillator in a squeezed bath. We show that the essential part of the dynamics can be expressed by the convolution of the initial Wigner function with a special kind of normalized Gaussian in the phase space and relate the dynamics with the change of Gaussian ordering of the density operator.

分 类 号：O413.1[理学—理论物理] TP391.41[理学—物理]