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Physics 2010
Detection of multimode spatial correlation in PDC and application to the absolute calibration of a CCD cameraDOI: 10.1364/OE.18.020572 Abstract: We propose and demonstrate experimentally a new method based on the spatial entanglement for the absolute calibration of analog detector. The idea consists on measuring the sub-shot-noise intensity correlation between two branches of parametric down conversion, containing many pairwise correlated spatial modes. We calibrate a scientific CCD camera and a preliminary evaluation of the statistical uncertainty indicates the metrological interest of the method.
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