title: Optical storage with electromagnetically induced transparency in a dense cold atomic ensemble.
abstract: We experimentally investigate optical storage with electromagnetically induced transparency in a dense cold (85)Rb atomic ensemble. By varying the optical depth (OD) from 0 to 140, we observe that the optimal storage efficiency has a saturation value of 50% as OD>50. Our result is consistent with that obtained from hot vapor cell experiments.
authors.affiliation: Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
authors.forename: Shanchao
authors.initials: S
authors.lastname: Zhang
authors.forename: Shuyu
authors.initials: S
authors.lastname: Zhou
authors.forename: M M T
authors.initials: MM
authors.lastname: Loy
authors.forename: G K L
authors.initials: GK
authors.lastname: Wong
authors.forename: Shengwang
authors.initials: S
authors.lastname: Du