%0 Journal Article
%T Entanglement between a two-level atom and spontaneous emission field in anisotropic photonic crystal<br>各向异性光子晶体中二能级原子和自发辐射场间的纠缠
%A Xie Shuang-Yuan
%A Hu Xiang
%A <br>谢双媛
%A 胡翔
%J 物理学报
%D 2010
%I 
%X By means of Von Neumann entropy and Schmidt number K, we study the time evolution properties of the entanglement between a two-level atom and spontaneous emission field in anisotropic photonic crystal. The evolution properties of the atom-field entanglement are directly related to the relative position of the upper level from the band edge. The atom-field entanglement can keep steady when the atomic upper level is within the band gap. The atom-field entanglement increases to the maximum value firstly and then decay to zero when the atomic upper level is within the transmitting band. The atom-field entanglement also depends on the initial state of the atom. We can control the time evolution properties of the atom-field entanglement by choosing special atomic initial state and the relative position of the upper level from the band edge.
%K entanglement
%K photonic crystal
%K atomic quantum entropy
%K Schmidt number K<br>纠缠
%K 光子晶体
%K 原子熵
%K Schmidt
%K number
%K K
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=73CFAFAF2E26F2FFBC7C05AD9A5EC771&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=9CF7A0430CBB2DFD&sid=345036C71A768B2C&eid=53C7C9C147B1FAA4&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=16