自旋轨道耦合玻色爱因斯坦凝聚体中的拉曼耦合强度  

Raman Coupling Strength in Spin-Orbit Couped Bose-Einsten Condensate

作　　者：黄良辉[1] 王鹏军[1] 付正坤[1] 张靖[1] 

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

出　　处：《光学学报》2014年第7期236-242,共7页Acta Optica Sinica

基　　金：国家973计划(2011CB921601);国家自然科学基金(11234008;61121064)

摘　　要：对玻色爱因斯坦凝聚中拉曼跃迁的拉比频率和耦合强度进行了实验研究,拉比频率是光与原子相互作用中的一个重要参量,用于衡量原子与光场之间耦合强度的大小,而拉曼跃迁耦合强度是自旋轨道耦合实验中的一个重要参数。研究了不同拉曼光频率失谐下,87 Rb在F=1时的超精细塞曼子能态|1,0〉和|1,1〉间的拉曼跃迁拉比振荡。在800nm的拉曼光作用下,观测到超精细态F=2的5个塞曼能态间同时耦合的拉比振荡。该工作有助于87 Rb自旋轨道耦合实验中参数的优化选择。Rabi frequency and coupling strength of the Raman transition in Bose-Einstein condensate are studied experimentally. Rabi frequency is an important parameter of the interaction between light field and atoms. It is used to measure the coupling strength between light field and atoms. Raman transition coupling strength is a crucial parameter in the experiment of spin-orbit coupling. The Rabi oscillation of Raman transition between Zeeman states [ 1,0〉 and [1,1〉 in hyperfine state F= 1 of 87 Rb is investigated with different frequency detuning of Raman laser. Moreover, Rabi oscillation coupled simultaneously in the five Zeeman energy levels of hyperfine atomic state F~ 2 is observed with Raman laser wavelength at 800 nm. This work is conductive to optimize the experimental parameters of 87 Rb spin-orbit coupling.

关 键 词：量子光学 自旋轨道耦合 玻色爱因斯坦凝聚 拉曼跃迁 拉比频率 耦合强度 

分 类 号：O431.2[机械工程—光学工程]