title: Manipulating the retrieved frequency and polarization of stored light pulses.
abstract: We have experimentally demonstrated that stored and retrieved light pulses have different frequencies but maintain phase coherence; a stored light pulse is released with a different polarization. However, the manipulation process causes an energy loss of the retrieved pulse. We have discovered that Clebsch-Gordan coefficients among the Zeeman sublevels play an important role in the energy loss and have demonstrated a solution for avoiding the energy loss.
authors.affiliation: Department of Physics, National Tsing Hua University, Hsinchu, Taiwan, China.
authors.forename: Yong-Fan
authors.initials: YF
authors.lastname: Chen
authors.forename: Pei-Chen
authors.initials: PC
authors.lastname: Kuan
authors.forename: Shih-Hao
authors.initials: SH
authors.lastname: Wang
authors.forename: Chang-Yi
authors.initials: CY
authors.lastname: Wang
authors.forename: Ite A
authors.initials: IA
authors.lastname: Yu