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Experimental Generation of Large Quadrature EPR Entanglement with a Self-Phase-Locked Type II OPO Below Threshold
Julien Laurat, Thomas Coudreau, Gaelle Keller +2
We study theoretically and experimentally the quantum properties of a type II frequency degenerate optical parametric oscillator below threshold with a quarter-wave plate inserted…
Quantum Noise in Multipixel Image Processing
Nicolas Treps, Vincent Delaubert, Agnes Maitre +2
We consider the general problem of the quantum noise in a multipixel measurement of an optical image. We first give a precise criterium in order to characterize intrinsic single mo…
Criteria of quantum correlation in the measurement of continuous variables in optics
Nicolas Treps, Claude Fabre
The purpose of this short tutorial paper is to review various criteria that have been used to characterize the quantum character of correlations in optical systems, such as "gemell…
Experimental evidence of spontaneous symmetry breaking in intracavity type-II second harmonic generation with triple resonance
Laurent Longchambon, Nicolas Treps, Thomas Coudreau +2
We describe an experiment showing a spontaneous symmetry breaking phenomenon between the intensities of the ordinary and extraordinary components of the fundamental field in intrac…
Compact Source of EPR Entanglement and Squeezing at Very Low Noise Frequencies
Julien Laurat, Thomas Coudreau, Gaelle Keller +2
We report on the experimental demonstration of strong quadrature EPR entanglement and squeezing at very low noise sideband frequencies produced by a single type-II, self-phase-lock…