10-Db Squeezed-Light Generation Using a Waveguide Optical Parametric Amplifier with Improved Phase-Locking Method

We generate 10.1±0.2-dB squeezed light from a broadband optical parametric amplifier based on a periodically poled lithium niobate waveguide by employing a novel phase-locking method that improves phase-locking accuracy without additional optical loss.