We present experimental studies on the generation of pulsed and continuous-wave squeezed vacuum via nonlinear rotation of the polarization ellipse in a 87Rb 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 85Rb F=3→F′ transition, which may allow the storage of squeezed light generated by 87Rb in a 85Rb 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.
@article{arxiv.0911.2918,
title = {Generation of pulsed and continuous-wave squeezed light with $^{87}$Rb vapor},
author = {Imad H. Agha and Gaétan Messin and Philippe Grangier},
journal= {arXiv preprint arXiv:0911.2918},
year = {2015}
}