强度耦合下与相干光场作用的原子间量子关联  

Quantum Correlation in a System of the Two Atoms Interacting with Coherent State under Intensity-Dependent Coupling

作　　者：格日乐 萨楚尔夫[2,3] 格根图雅 Gerile;Sachuerfu;Gegentuya(Pioneer College.Inner Morgolia University,Hohhot 010070,China;College of Physics and Electronic In formation,Inner Mongolia Normal University,010022,China;Library,Inner Mongolia Normal University,Hohhot,010022,China)

机构地区：[1]内蒙古大学创业学院,呼和浩特010070 [2]内蒙古师范大学物理与电子信息学院,呼和浩特010022 [3]内蒙古师范大学图书馆,呼和浩特010022

出　　处：《量子光学学报》2020年第3期281-290,共10页Journal of Quantum Optics

基　　金：内蒙古自然科学基金(2019MS03024);内蒙古师范大学“十百千”人才基金(RCPY-2-2012-K-038);内蒙古大学创业学院自然科学基金(2018CY24)。

摘　　要：运用量子关联的概念及度量方法,在多光子跃迁和强度关联耦合条件下,研究了两个二能级原子与两个相干腔场相互作用系统中量子关联动力学演化特性.分析和讨论了初始时刻原子处于Werner态时,系统参数的取值对系统量子及经典关联动力学演化特性的影响.结果表明:对单光子跃迁情况,两原子间的量子与经典关联随时间的动力学演化,呈现为具有一定周期的振荡变化过程;当跃迁光子数增大时,两原子间的上述动力学演化的周期振荡现象消失,振荡幅值减小;当关联耦合强度增大时,原子间的量子及经典关联振荡周期变短,而量子及经典关联的最大值不变.By means of the concept and measurement methods of quantum correlations, the dynamics of the quantum correlations between two atoms in a system of two two-level atoms interacting with two coherent field state existing in two cavities have been investigated. As the two atoms are initially in a Werner state, the effects of the system’s parameters on evolution properties of the dynamics of the system are discussed and analyzed.The results show that the dynamical behavior of quantum and classical correlations between two atoms evolves in periodically in one-photon transitional process;the periodicity of the temporal evolution for the quantum and classical correlations is destroyed and the amplitudes of the correlation oscillations are decreased with the transitional photon number increasing;the period of the dynamical evolution for the quantum and classical correlations becomes shorter and moreover the maximum values of quantum and classical correlations are the fixed ones for the increasing of Intensity-dependent coupling.

关 键 词：量子光学 量子关联 量子纠缠 多光子跃迁 相干态 强度关联耦合 

分 类 号：O431[机械工程—光学工程]