虚光场对双模SU(1,1)相干态光场与原子玻色-爱因斯坦凝聚体相互作用系统中量子纠缠的影响  

Influence of a virtual photon field on the entanglement properties of the system of two-mode SU(1,1)coherent states interacting with atomic Bose-Einstein condensate

作　　者：李咏梅[1] 赵建刚[2] 

机构地区：[1]济宁学院物理与信息工程系 [2]江苏省灌云县伊山中学

出　　处：《原子与分子物理学报》2010年第2期298-304,共7页Journal of Atomic and Molecular Physics

基　　金：山东省自然科学基金(Q2008G04)

摘　　要：在双模SU(1,1)相干态光场和原子玻色-爱因斯坦凝聚体相互作用系统中,应用全量子理论,在非旋波近似下,分别利用量子约化熵和量子相对熵,研究了双模SU(1,1)相干态光场与原子玻色-爱因斯坦凝聚体间的量子纠缠和双模光场的模间纠缠,讨论了虚光场、原子-场的耦合常数和光场参数对场-凝聚体原子纠缠和光场模间纠缠的影响.The entanglement of field-atom and the entanglement between the two-mode field is investigated by using the quantum reduced entropy and quantum relative entropy without the rotating-wave approximation by means of quantum theory in a system of two-mode SU（1,1） coherent states interacting with atomic Bose-Einstein condensate. The influence of coupling constant,field parameter and a virtual photon field on the evolution of the entanglement of field-atom and the entanglement between two modes of field have been discussed.

关 键 词：量子光学 玻色-爱因斯坦凝聚 双模SU(1 1)相干态 量子纠缠 

分 类 号：O431[机械工程—光学工程]