简并双光子拉曼耦合系统中密度算符间距的演化  

Distance Between Density Operators Evolution in Degenerate Raman Two-photon Coupling System

作　　者：张立辉[1] 

机构地区：[1]江汉大学物理与信息工程学院,湖北武汉430056

出　　处：《江汉大学学报（自然科学版）》2003年第4期22-25,共4页Journal of Jianghan University：Natural Science Edition

摘　　要：研究了位于相位损耗腔中简并双光子拉曼耦合系统中密度算符的时间演化,讨论了相位损耗和光场平均光子数对密度算符间距的影响.结果表明,由于相位损耗的存在使得光场和系统的量子态偏离初始纯态.The time evolution of distance between density operators in degenerate Raman two- photon coupling system inside a phase-damping are investigated . The influences of phase damping and the mean photon munber of the field on the distance between density opertors are discussed . The results show that the existence of cavity phase damping leads to the phenomenon that the quan- tum states of the field and the system deviate from the initial pure state.

关 键 词：简并双光子拉曼耦合系统 密度算符间距 相位损耗 平均光子数 量子光学 

分 类 号：O431.2[机械工程—光学工程]