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Quantum Electronics and Laser Science Conference

Soliton squeezing at GHz rate in a Sagnac loop

C. X. Yu, H. A. Haus, Erich P. Ippen

Published Nov 13, 2002• 0 citations
Publisher

Abstract

We demonstrate the first all-fiber squeezing experiment at room temperature. A record 6.1+/-0.2 dB of noise reduction below shot noise has been obtained without stabilization. When loss is taken into account, /spl sim/11 dB of squeezing is inferred.
DOI
10.1109/qels.2001.962251

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Direct photon-number squeezing is demonstrated, for the first time to our knowledge, in a nonlinear fiber-optic interferometer. Launching 126-fs solitons into a highly asymmetric Sagnac loop, the maximum photocurrent noise reduction was $3.9\ifmmode\pm\else\textpm\fi{}0.2\mathrm{dB}$ below shot noise, corresponding to $6.0\ifmmode\pm\else\textpm\fi{}0.9\mathrm{dB}$, when corrected for linear losses. The loop is a model system for squeezing generated by the interference of two pulses after nonlinear propagation through a fiber.