Dependence of electromagnetically induced transparency on temperature
Xiao Feng (肖峰), Guo Rui-Min (郭瑞民), Li Lu-Ming (李路明), Yang Dong-Hai (杨东海), Chen Xu-Zong (陈徐宗)
Key Laboratory of Quantum Information and Measurement, Ministry of Education of China, Department of Electronics, Peking University, Beijing 100871, China
Abstract We performed an experimental study on the dependence of the linewidth of electromagetically induced transparency (EIT) on the temperature of medium in a $\Lambda$-type configuration using caesium vapour. We found that the transparent window is narrowed in the EIT whose two ground levels are composed of two hyperfine levels, and broadened in the case when the two ground levels are degenerated Zeeman sublevels, as the temperature of vapour cell is increased. The explanation for the phenomena is given qualitatively.
Received: 09 April 2003
Revised: 29 August 2003
Accepted manuscript online:
PACS:
42.50.Md
(Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency)
Fund: Project supported partially by the State Key Development Program of Basic Research of China (Grant No 2001CB309308), and the Key Project of Natural Science Foundation from the Ministry of Education of Chian (Grant No 00-09).
Cite this article:
Xiao Feng (肖峰), Guo Rui-Min (郭瑞民), Li Lu-Ming (李路明), Yang Dong-Hai (杨东海), Chen Xu-Zong (陈徐宗) Dependence of electromagnetically induced transparency on temperature 2004 Chinese Physics 13 36
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