受激辐射下两原子有效量子纠缠  

Effective quantum entanglement of two-atom under stimulated emission

作　　者：郭彦青[1] 张映辉[1] 仲海洋[1] 

机构地区：[1]大连海事大学,物理系,辽宁大连116026

出　　处：《大连海事大学学报》2008年第z1期132-134,共3页Journal of Dalian Maritime University

基　　金：国家自然科学基金资助项目(10647107,10575017)

摘　　要：研究了受激辐射相互作用下两原子体系的量子纠缠特性.运用量子绝热近似方法,获得了体系的有效哈密顿量,讨论了在该哈密顿量下两原子量子纠缠的动力学演化.研究结果说明,在大失谐条件下,受激辐射相互作用可以将两原子制备到最大纠缠的Bell态,在退相干时间内,原子的自发辐射及热环境对量子纠缠的影响不大.The property of the two-atom entanglement under stimulated emission interaction was studied.The adiabatic approximation method was applied to obtain the effective Hamiltonian of the system.The kinetic evolvement of the entanglement governed by the Hamiltonian was analyzed.The result indicates that,under large detuning condition,two-atom maximum entangled states-Bell states can be generated by stimulated emission.In decoherence time scale,the entanglement is insensitive to the atomic spontaneous emission and thermal environment.

关 键 词：量子纠缠 BELL态 受激辐射 自发辐射 两原子 

分 类 号：O413.1[理学—理论物理] TN201[理学—物理]