共振和非共振情况下非简并双光子Tavis-Cummings模型中原子与原子之间的纠缠演化  

Entanglement evolution between atoms in the non-degenerate two photons Tavis-Cummings model in resonance and non-resonance cases

作　　者：张国锋[1] 卜晶晶[1] 

机构地区：[1]北京航空航天大学物理科学与核能工程学院物理系,北京100191

出　　处：《物理学报》2010年第3期1462-1467,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10604053和10874013)资助的课题~~

摘　　要：针对共振和非共振情况讨论了非简并双光子Tavis-Cummings(T-C)模型中原子与原子之间的纠缠演化,得到纠缠度的解析表达式.基于两类型不同的初态,详细分析了光场本征频率、原子跃迁频率以及原子与原子间偶极相互作用对纠缠的影响,并比较了共振和非共振情况下的纠缠演化行为.The entanglement character between a two-level atom and a two-mode field as well as two-level atoms in the non-degenerate two photons Tavis-Cummings model in the resonance and non-resonance cases have been investigated, and the analytical expression about entanglement is obtained. Based on two kinds of initial states, the effects of field frequency, atomic frequency and dipole-dipole coupling between atoms on the entanglement are shown in detail. The cases of resonance and non-resonance are compared.

关 键 词：T-C模型 共振 纠缠度 偶极相互作用 

分 类 号：O431.2[机械工程—光学工程]