Experimental investigation of amplitude and phase quantum correlations in a type II optical parametric oscillator above threshold: from nondegenerate to degenerate operation |
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Authors: | Laurat Julien Longchambon Laurent Fabre Claude Coudreau Thomas |
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Institution: | Laboratoire Kastler Brossel, Case 74, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France. |
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Abstract: | We describe a stable type II optical parametric oscillator operated above threshold that provides 9.7 +/- 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, to our knowledge, by homodyne detection of the generated bright two-mode state in the case of frequency-degenerate operation obtained by the introduction of a birefringent plate inside an optical cavity. |
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