%0 Journal Article
%T Calculation of Covariance Matrix for Multi-mode Gaussian States in Decoherence Processes<br>
%A XIANG Shao-Hua
%A SHAO Bin
%A SONG Ke-Hui
%A <br>
%J 中国物理快报
%D 2009
%I 
%X We investigate the dynamics of n single-mode continuous variable systems in a generic Gaussian state under the influence of the independent and correlated noises making use of the characteristic function method. In two models the bath is assumed to be a squeezed thermal one. We derive an explicit input-output expression between the initial and final covariance matrices. As an example, we study the evolution of entanglement of three-mode Gaussian state embedded in two noisy models.
%K 03
%K 67
%K Mn
%K 03
%K 65
%K Yz
%K 03
%K 67
%K -a<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=226F22F48409D79E1281261B67225269&yid=DE12191FBD62783C&vid=96C778EE049EE47D&iid=38B194292C032A66&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0