arXiv:0706.0874 · Journal of the Optical Society of America B

Enhanced optical communication and broadband sub-shot-noise interferometry with a stable free-running periodically poled KTiOPO_4 squeezer

Daruo Xie, Matthew Pysher, Jietai Jing, Olivier Pfister

Published Sep 21, 2007• 2 citations

Abstract

An intrinsically stable type I optical parametric oscillator was built with a periodically poled KTiOPO4 crystal to generate a stable, bright, cw, broadband phase-squeezed beam. A 3.2 dB sensitivity enhancement of optical interferometry was demonstrated on weak electro-optic modulation signals within a 20 MHz squeezing bandwidth. This also realized a channel capacity increase beyond that of coherent optical communication.

DOI: 10.1364/josab.24.002702

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