We report the experimental demonstration of polarization squeezed beam at 795 nm by combining a quadrature squeezed beam with a coherent beam. The quadrature squeezed beam is generated by a degenerate optical parametric amplifier based on a PPKTP crystal. Stokes parameter squeezing of -3.8 dB and anti squeezing of +5.0 dB is observed. This polarization squeezed beam resonant to rubidium D1 line has potential applications in quantum information networks and precise measurement beyond the shot noise limit.
@article{arxiv.1705.08696,
title = {Generation of polarization squeezed light with an optical parametric amplifier at 795 nm},
author = {Yashuai Han and Xin Wen and Jinyu Liu and Jun He and Junmin Wang},
journal= {arXiv preprint arXiv:1705.08696},
year = {2018}
}