%0 Journal Article
%T Detection of multimode spatial correlation in PDC and application to the absolute calibration of a CCD camera
%A Giorgio Brida
%A Ivo Pietro Degiovanni
%A Marco Genovese
%A Maria Luisa Rastello
%A Ivano Ruo-Berchera
%J Physics
%D 2010
%I arXiv
%R 10.1364/OE.18.020572
%X 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.
%U http://arxiv.org/abs/1005.2937v1