摘要
用共生纠缠度度量的方法来研究两原子在耗散和非耗散腔场中的量子纠缠.研究结果表明:通过控制相互作用时间能够制备出最大纠缠态;且由于原子的双光子跃迁,导致双光子Tavies-Cummings模型是单光子Tavies-Cummings模型在制备最大纠缠态上所需要的时间的.且原子的自发辐射和腔场的损耗使得两原子的最大相干随时间呈周期性减小.
This paper investigates quantum entanglement of two atoms in the non-dissipative and dissipative cases by means of concurrence.The results indicate that maximum entanglement condition can be prepared by controlling the interacting time and due to the two-photon transition of atoms,the time required to prepare the maximum entanglement in two-photon Tavies-Cummings model is of that in single-photon Tavies-Cummings model.In addition,the atomic spontaneous emission and cavity decay make the maximum coherence of two atoms decrease periodically.
出处
《吉首大学学报(自然科学版)》
CAS
2011年第4期50-54,共5页
Journal of Jishou University(Natural Sciences Edition)
基金
湖南省科技厅计划课题资助项目(2010FJ3081)