%0 Journal Article
%T Entanglement and intrinsic decoherence in the interaction between two-mode field and atom<br>双模场与原子相互作用中的量子纠缠和内禀退相干
%A Tan Xi
%A Zhang Cheng-Qiang
%A Xia Yun-Jie
%A <br>谭 霞
%A 张成强
%A 夏云杰
%J 物理学报
%D 2006
%I 
%X Considering the interaction between two-mode SU(1,1) coherence states and a two-level atom, we find an exact solution of the Milburn equation for the system. We investigate the time evolution of the entanglement of field-atom and one of two modes of field using the quantum-reduced entropy and quantum relative entropy, respectively. The influences of intrinsic decoherence and two-mode photon number difference on the evolution of the entanglement of field-atom and one of two modes of field are discussed. It is shown that the entanglement of field-atom reduces to a stationary value with time evolution and the entanglement between two modes increases to another stationary value with intrinsic decoherence, and the values only depend on the two-mode photon number and mean photon number.
%K Milburn theory
%K two-mode SU (1
%K 1) coherence state
%K quantum-reduced entropy
%K quantum relative entropy<br>Milburn理论
%K SU(1
%K 1)相干态
%K 量子约化熵
%K 量子相对熵
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=5FEC9C8BD87690B7&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=94C357A881DFC066&sid=7E87357967245499&eid=3A9DC0CD8A6F1E57&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=18