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†,
       

Variations of retrieval efficiency with storage time Δt for the time delays of 15 μs (a), 100 μs (b), 1500 μs (c), 3500 μs (d), 5000 μs (e), and 6000 μs (f), respectively. In panels (a)–(f), red circle and black square dots are the measured results for the right- and left-circularly polarized signal light fields, respectively, and solid lines are the fittings based on η(Δt) = η0e–Δt/τ.