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Experimental investigation of amplitude and phase quantum correlations in a type II OPO above threshold: from the non-degenerate to the degenerate operation

Julien Laurat·Thomas Coudreau·Laurent Longchambon·Claude Fabre
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Abstract

We describe a very stable type II optical parametric oscillator operated above threshold which provides 9.7 $\pm$ 0.5 dB (89%) of quantum noise reduction on the intensity difference of the signal and idler modes. We also report the first experimental study by homodyne detection of the generated bright two-mode state in the case of frequency degenerate operation obtained by introducing a birefringent plate inside the optical cavity.

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Julien Laurat, Thomas Coudreau, Laurent Longchambon, Claude Fabre. 2004-12-14. Experimental investigation of amplitude and phase quantum correlations in a type II OPO above threshold: from the non-degenerate to the degenerate operation. https://doi.org/10.1364/ol.30.001177

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