National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [60878004, 11074087]; Ministry of Education [200805110002]; Natural Science Foundation of Hubei ProvinceNatural Science Foundation of Hubei Province [2010CDA075]; Nature Science Foundation of Wuhan City [201150530149]
机构署名：
本校为第一且通讯机构
院系归属：
物理科学与技术学院
摘要：
We propose a model to study the coherence and entanglement resulting from the interaction of a finite-size atomic ensemble with degenerate counter-propagating field modes of a high-Q ring cavity. Our approach applies to an arbitrary number of atoms N and includes the spatial variation of the field throughout the ensemble.We report several new interesting aspects of coherence and entangled behaviour that emerge when the size of the atomic ensemble is not taken to the thermodynamic limit of N !1. Under such conditions, it is found that although in the thermodynamic limit the counter-propagating ...
