Generation of pulsed and continuous-wave squeezed light with $^{87}$Rb vapor

Details Generation of pulsed and continuous-wave squeezed light with $^{87}$Rb vapor Generation of pulsed and continuous-wave squeezed light with $^{87}$Rb vapor

2009-11-15

arxiv.org/abs/0911.2918v4

Physics

Quantum Physics

9 pages, 5 figures

Scientific paper

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 \pm0.1$ dB (-2.0 dB corrected for losses). We measure -1.1 dB squeezing at the resonance frequency of the $^{85}$Rb $F=3 \to F'$ 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.

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