Experimental study of the dependences of retrieval efficiencies on time delay between magneto-optical-trap being turned off and optical storage
Chen Li-Rong, Xu Zhong-Xiao, Li Ping, Wen Ya-Fei, Zeng Wei-Qing, Wu Yue-Long, Tian Long, Li Shu-Jing, Wang Hai†, 
Lifetime as a function of time delay
