%0 Journal Article
%T Fidelity of two-level atoms'''' quantum states in a strong thermal radiation field<br>强热辐射环境中两能级原子量子态保真度
%A Zhang Deng-Yu
%A Guo Ping
%A Gao Feng
%A <br>张登玉
%A 郭萍
%A 高峰
%J 物理学报
%D 2007
%I 
%X The two-level atom is described by Pauli sign and the environment is described by infinite harmonic particle thermal reservoir. We have studied the problem of fidelity of quantum states of two-level atoms located in strongly thermal radiation field. The two-level atoms' reducible density rectangular array is obtained. We discuss the properties of fidelity. It is shown that for the two two-level atoms initially situated in different coherent superposition states, quantum information may partly lose fidelity or may not lose fidelity during evolution in transmission process.
%K thermal radiation field
%K two-level atom
%K fidelity
%K decoherence<br>热辐射场
%K 两能级原子
%K 保真度
%K 消相干
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=7973E05B7D3496ED&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=E158A972A605785F&sid=DDDE8AA7C661A4B3&eid=B37991020B552F70&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=13