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

doi:10.1088/1674-1056/25/2/024203

Abstract

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 right- and 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 us) 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.

Keywords: light storage electromagnetically induced transparency cold atomic ensemble experimental repetition rate

Received: 06 July 2015
Revised: 20 August 2015
Accepted manuscript online:

PACS:	42.50.-p	(Quantum optics)
	42.50.Gy	(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
	32.80.Qk	(Coherent control of atomic interactions with photons)
	42.50.Ex	(Optical implementations of quantum information processing and transfer)

Fund:

Project supported by the National Basic Research Program of China (Grant No. 2010CB923103) and the National Natural Science Foundation of China (Grant Nos. 11475109, 11274211, and 60821004).

Corresponding Authors: Hai Wang
E-mail: wanghai@sxu.edu.cn

Cite this article:

Li-Rong Chen(陈力荣), Zhong-Xiao Xu(徐忠孝), Ping Li(李萍), Ya-Fei Wen(温亚飞), Wei-Qing Zeng(曾炜卿), Yue-Long Wu(武跃龙), Long Tian(田龙), Shu-Jing Li(李淑静), Hai Wang(王海) Experimental study of the dependences of retrieval efficiencies on time delay between magneto-optical-trap being turned off and optical storage 2016 Chin. Phys. B 25 024203

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

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