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arXiv · 0706.0874

Enhanced optical communication and broadband sub-shot-noise interferometry with a stable free-running periodically-poled-KTiOPO4 squeezer

Daruo Xie·Matthew Pysher·Jietai Jing·Olivier Pfister
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Abstract

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

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Daruo Xie, Matthew Pysher, Jietai Jing, Olivier Pfister. 2007-06-06. Enhanced optical communication and broadband sub-shot-noise interferometry with a stable free-running periodically-poled-KTiOPO4 squeezer. https://doi.org/10.1364/josab.24.002702

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