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Opt Lett. 2007 Jun 15;32(12):1698-700.

Observation of squeezed light at 1.535 microm using a pulsed homodyne detector.

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Crest Research Team for Photonic Quantum Information, Gakushuin University, Tokyo, Japan.


Squeezed light was generated at a telecommunication wavelength via single-pass optical parametric amplification in a periodically poled MgO-doped LiNbO(3) waveguide. Classical parametric deamplification of -8.9 dB was achieved. This large magnitude of deamplification indicates that the problem of gain-induced diffraction was avoided by employing the waveguide. Squeezing of 3.2 dB was directly observed using a time-domain pulsed homodyne detector.


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