玻色爱因斯坦凝聚体中电磁诱导透明和电磁诱导吸收的研究  

Electromagnetically Induced Transparency and Electromagnetically Induced Absorption in 87Rb Bose-Einstein Condensate

作　　者：杨广玉 陈良超[1,2] 米成栋 王鹏军 张靖[1,2] YANG Guang-yu;CHEN Liang-chao;MI Cheng-dong;WANG Peng-jun;ZHANG Jing(State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics , Shanxi University, Taiyuan 030006, China;Collaborative Innovation Center of Extreme Optics, 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》2018年第2期156-163,共8页Journal of Quantum Optics

基　　金：国家重点基础研究发展计划(2016YFA0301602);国家自然科学基金(11234008,11361161002,11474188);山西省自然科学基金(2014011008.2)

摘　　要：实验上在87 Rb玻色爱因斯坦凝聚体中,分别采用激发态52 P1/2中的超精细态F′=1和F′=2与基态52S1/2的超精细能级构成的Λ型三能级结构研究了电磁诱导透明和电磁诱导吸收现象。饱和吸收稳频技术和光学相位锁定技术为实验提供了稳定的探测光场和耦合光场。通过扫描探测光的频率,绘制了电磁诱导透明和电磁诱导吸收中原子的吸收特性谱线。基于玻色爱因凝聚体抗干扰差的特征,实验中采用吸收成像的方法来反映原子对探测光的吸收特性。实验中发现超精细能级的Zeeman效应使探测光和耦合光存在三种不同类型的跃迁：π跃迁、σ＋跃迁和σ-跃迁,这三种不同类型的跃迁对组成电磁诱导透明Λ型三能级结构和电磁诱导吸收类M型四能级结构起到了关键的作用。We have observed electromagnetically induced transparency and electromagnetically induced absorption in the D1 line of 87 Rb Bose-Einstein condensate by taking the Λ-type three level structure consisting of the hyperfine of D1 line and ground state hyperfine line as the object of study.We combine the Frequency stabilization of saturation absorption and optical phase-locking loop techniques for providing stable probe light field and coupling light field,which finely modulate the frequency of probe light and coupling light.By scanning the frequency of probe light,the spectrum of atoms absorption can be plotted.Furthermore,considering of characteristics of poor anti-interference of BEC,absorption imaging is used to reflect the absorption characteristics of the probe light.It is found that there are three different types of transition involving ofπ、σ-andσ＋due to the presence of Zeeman effect.These three different types of transitions are composed ofΛ-type three-level structure and similar M-type four-level structure,which play key roles in electromagnetically induced transparency and electromagnetically induced absorption.The combination of ultra-cold atoms and electromagnetically induced transparency with electromagnetically induced absorption plays an important and positive role in the research of information storage and light speed reduction.

关 键 词：电磁诱导透明 电磁诱导吸收 玻色-爱因斯坦凝聚体 

分 类 号：O431[机械工程—光学工程]