Rb原子系综中读光跃迁频率对光与原子纠缠影响  

The Influence of Readout Transition Selection in Rb Atom Ensemble on the Quality of Light and Atom Entanglement Source

作　　者：周湃 温亚飞 袁亮 李雅 李淑静[1,2] 王海 ZHOU Pai;WEN Ya-fei;YUAN Liang;LI Ya;LI Shu-jing;WANG Hai(State Key of Laboratory of Quantum Optics and Quantum Optics Devices,Taiyuan 030006,China;Collaborative Innovation Center of Extreme Optics,Institute of Opto-Electronics,Shanxi University,Taiyuan 030006,China)

机构地区：[1]山西大学光电研究所,量子光学与光量子器件国家重点实验室,山西太原030006 [2]山西大学,极端光学协同创新中心,山西太原030006

出　　处：《量子光学学报》2020年第2期128-133,共6页Journal of Quantum Optics

基　　金：国家重点研发计划(2016YFA0301402);国家自然科学基金(11475109,11274211,11604191);山西省“1331工程”重点学科建设计划经费资助;山西省应用基础研究计划(201601D202007)。

摘　　要：在87Rb冷原子系综中,利用自发Raman散射过程实现了光与原子纠缠。通过选择两个不同的跃迁频率的读光对存储的自旋波进行读出,在两种不同读光频率下测量了读出效率以及Bell参数S值。结果发现在读光功率相同的条件下其中一种读光频率的读出效率为18%,Bell参量S值为2.68。另一种读光频率的读出效率达到38%,Bell参量S值为2.5。本文的研究成果为产生高质量的光与原子纠缠源提供了实验基础。In the 87Rb cold atom ensemble,the entanglement of light and atoms was realized by using the spontaneous Raman Scattering process.The spin wave was read out by selecting two different transition frequencies.The readout efficiency and S value of bell parameter were measured under two different reading frequencies.The results show that the readout efficiency of one frequency is 18%,and the S value of bell parameter is 2.68.The readout efficiency of the other frequency is 38%,and the S value of bell parameter is 2.5.The results of this paper provide an experimental basis for the generation of high quality quantum entanglement of light and atomic.

关 键 词：自发拉曼散射 冷原子系综 光与原子纠缠源 读光跃迁频率 

分 类 号：O431[机械工程—光学工程]