Experimental study of the dependences of retrieval efficiencies on time delay between magneto-optical-trap being turned off and optical storage

We report an experimental study of electromagnetically induced transparency（EIT）-based light storage in a cloud of cold atoms loaded into a magneto-optical-trap（MOT）. After the MOT is turned off, the retrieval efficiencies of rightand left-circularly polarized signal light fields each as a function...

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Published inChinese physics B Vol. 25; no. 2; pp. 175 - 180
Main Author 陈力荣 徐忠孝 李萍 温亚飞 曾炜卿 武跃龙 田龙 李淑静 王海
Format Journal Article
LanguageEnglish
Published 01.02.2016
Subjects
Cold atoms
Cold storage
Delay
Entanglement
Optimization
Photons
Retrieval
Time delay
依赖性
光存储
冷原子云
实验
时间延迟
时间测量
电磁诱导透明
磁光阱
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/25/2/024203

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Summary:We report an experimental study of electromagnetically induced transparency（EIT）-based light storage in a cloud of cold atoms loaded into a magneto-optical-trap（MOT）. After the MOT is turned off, the retrieval efficiencies of rightand left-circularly polarized signal light fields each as a function of storage time are measured for different time delays between MOT off and the storage event, respectively. The results show that in the delay ranging from 0.015 ms to 3.5 ms,the retrieval efficiency for a zero-storage time（0.2 μs） and the storage lifetime can exceed 15% and 1.4 ms, respectively.The measured results will provide important help for optimizing the storage of the polarized entanglement photons in cold atomic ensembles.
Bibliography:We report an experimental study of electromagnetically induced transparency（EIT）-based light storage in a cloud of cold atoms loaded into a magneto-optical-trap（MOT）. After the MOT is turned off, the retrieval efficiencies of rightand left-circularly polarized signal light fields each as a function of storage time are measured for different time delays between MOT off and the storage event, respectively. The results show that in the delay ranging from 0.015 ms to 3.5 ms,the retrieval efficiency for a zero-storage time（0.2 μs） and the storage lifetime can exceed 15% and 1.4 ms, respectively.The measured results will provide important help for optimizing the storage of the polarized entanglement photons in cold atomic ensembles.
light storage, electromagnetically induced transparency, cold atomic ensemble, experimental rep-etition rate
11-5639/O4
Li-Rong Chen, Zhong-Xiao Xu, Ping Li, Ya-Fei Wen, Wei-Qing Zeng, Yue-Long Wu, Long Tian, Shu-Jing Li, and Hai Wang The State Key of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China
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ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/25/2/024203