Pulsed homodyne measurements of femtosecond squeezed pulses generated by single-pass parametric deamplification

Details Pulsed homodyne measurements of femtosecond squeezed pulses generated by single-pass parametric deamplification Pulsed homodyne measurements of femtosecond squeezed pulses generated by single-pass parametric deamplification

2004-02-25

arxiv.org/abs/quant-ph/0402193v1

Opt. Lett. 29, 1267 (2004).

Physics

Quantum Physics

Accepted for publication in Optics Letters

Scientific paper

10.1364/OL.29.001267

A new scheme is described for pulsed squeezed light generation using femtosecond pulses parametrically deamplified through a single pass in a thin (0.1mm) potassium niobate KNbO3 crystal, with a significant deamplification of about -3dB. The quantum noise of each individual pulse is registered in the time domain using a single-shot homodyne detection operated with femtosecond pulses and the best squeezed quadrature variance was measured to be 1.87 dB below the shot noise level. Such a scheme provides the basic ressource for time-resolved quantum communication protocols.

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