%0 Journal Article
%T The time evolution of relative density operator in phase diffusion channels<br>相位扩散通道中密度算符相关态的时间演化
%A Zhou Jun
%A Yuan Hao
%A Song Jun
%A <br>周军
%A 袁好
%A 宋军
%J 物理学报
%D 2012
%I 
%X By virtue of the properties of thermal entanglement, we succeed to obtain the solution to the representative phase diffusion master equation and give the operator sum representation of density operator. After analyzing the time evolution process of density operator at different initial state, we find out density operators keep invariable with the initial state being Fock state or thermal state. But the system always maintains coherence with phase diffusion when the initial state is coherent state.
%K master equation
%K thermo-entangled state
%K density operator<br>主方程
%K 热纠缠态
%K 密度算符
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=EA4AE3EE8E5D685E00F38C516063BF5B&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=38B194292C032A66&sid=FD40A6A3DFE11B07&eid=FD40A6A3DFE11B07&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=18