Supplement 1: Highly efficient optical quantum memory with long coherence time in cold atoms
Y.-W. Cho, Geoff Campbell, Jesse L. Everett, J. Bernu, Daniel B. Higginbottom, M. T. Cao, Jiao Geng, Nicholas P. Robins, Ping Koy Lam, B. C. Buchler
Y.-W. Cho, Geoff Campbell, Jesse L. Everett, J. Bernu, Daniel B. Higginbottom, M. T. Cao, Jiao Geng, Nicholas P. Robins, Ping Koy Lam, B. C. Buchler