title: Generation of pulsed and continuous-wave squeezed light with 87Rb vapor.
abstract: We present experimental studies on the generation of pulsed and continuous-wave squeezed vacuum via nonlinear rotation of the polarization ellipse in a (87)Rb vapor. Squeezing is observed for a wide range of input powers and pump detunings on the D1 line, while only excess noise is present on the D2 line. The maximum continuous-wave squeezing observed is -1.4 +/- 0.1 dB (-2.0 dB corrected for losses). We measure -1.1 dB squeezing at the resonance frequency of the (85)Rb F = 3 --> F' transition, which may allow the storage of squeezed light generated by (87)Rb in a (85)Rb quantum memory. Using a pulsed pump, pulsed squeezed light with -1 dB of squeezing for 200 ns pulse widths is observed at 1 MHz repetition rate.
authors.affiliation: Laboratoire Charles Fabry, Institut d'Optique, CNRS, Univ.Paris-Sud, Campus Polytechnique, 91127 Palaiseau Cedex, Franceimad.agha@institutoptique.fr
authors.forename: Imad H
authors.initials: IH
authors.lastname: Agha
authors.forename: Gaétan
authors.initials: G
authors.lastname: Messin
authors.forename: Philippe
authors.initials: P
authors.lastname: Grangier