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^†,

Retrieval efficiencies each as a function of the time delay τ. Red circle and black square dots are the measured results for the right- and left-circularly polarized signal light fields, respectively.