Brida Giorgio, Degiovanni Ivo Pietro, Genovese Marco, Rastello Maria Luisa, Ruo-Berchera Ivano
Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce 91, 10135 Torino, Italy.
Opt Express. 2010 Sep 27;18(20):20572-84. doi: 10.1364/OE.18.020572.
We propose and demonstrate experimentally a new method based on the spatial entanglement for the absolute calibration of analog detectors. 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 uncertainty indicates the metrological interest of the method.
我们提出并通过实验证明了一种基于空间纠缠的模拟探测器绝对校准新方法。该方法的思路是测量参量下转换两个分支之间的亚散粒噪声强度相关性，这两个分支包含许多成对相关的空间模式。我们校准了一台科学电荷耦合器件（CCD）相机，对不确定性的初步评估表明了该方法在计量学方面的价值。
