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Conference on Lasers and Electro-Optics

Generation of femtosecond pulsed squeezed light in optical telecommunication band

Keiichi Hirano, Y. Takahashiy, Go Fujii, S. Machida, Shuichiro Inoue, S. Komatsuy, Sunao Kurimura

Published Jan 1, 2006• 0 citations
Publisher

Abstract

We have generated squeezed vacuum in optical telecommunication band by a single-pass parametric amplification in periodically poled lithium niobate. The measured noise reduction was 3.1 dB below the shot-noise level.
DOI
10.1109/cleo.2006.4628681

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A new scheme is described for the generation of pulsed squeezed light by use of femtosecond pulses that have been parametrically deamplified through a single pass in a thin (100-microm) potassium niobate crystal with a significant deamplification of approximately -3 dB. The quantum noise of each pulse is registered in the time domain by single-shot homodyne detection operated with femtosecond pulses; the best squeezed quadrature variance was 1.87 dB below the shot-noise level. Such a scheme provides a basic resource for time-resolved quantum communication protocols.
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