%0 Journal Article
%T The entanglement character of two entangled atoms in Tavis-Cummings model<br>Tavis-Cummings模型中两纠缠原子纠缠的演化特性
%A Shan Chuan-Jia
%A Xia Yun-Jie
%A <br>单传家
%A 夏云杰
%J 物理学报
%D 2006
%I 
%X We investigate the entanglement time evolution of two entangled two-level atoms that interact resonantly with a single-mode field in the Fock state. The results show that the two-atom entanglement state appears with periodicity. The influence of the two-atom initial state, the dipole-dipole coupling intensity between two atoms, and the field in the Fock state on the entanglement degree of two atoms are revealed. Meanwhile the two-atom quantum state will forever stay in the maximum entangled state when the initial state is proper.
%K quantum entanglement
%K dipole-dipole coupling intensity
%K negative eigenvalues of the partial transposition
%K entangled atoms<br>量子纠缠
%K 偶极-偶极相互作用
%K 部分转置矩阵负本征值
%K 纠缠原子
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=A2CE69F0C4FAAFE5&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=E158A972A605785F&sid=A7E1C896834B988A&eid=F7B1A3F8BE432B4F&journal_id=1000-3290&journal_name=物理学报&referenced_num=27&reference_num=18