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Opt Express. 2010 Mar 1;18(5):4198-205. doi: 10.1364/OE.18.004198.

Generation of pulsed and continuous-wave squeezed light with 87Rb vapor.

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1
Laboratoire Charles Fabry, Institut d'Optique, CNRS, Univ.Paris-Sud, Campus Polytechnique, 91127 Palaiseau Cedex, Franceimad.agha@institutoptique.fr

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.

PMID:
20389432
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