Środowiskowe Seminarium z Informacji i Technologii Kwantowych

An efficient iterative inference scheme of nonlinear estimation, connecting the features of the Fisher information with the parametric locality of the problem, will be presented. The iterative scheme reconstructs only a subset of the whole set of parameters in each step and is linear on the total number of parameters. We apply our scheme to quantum near-field imaging and demonstrate super-resolution for measurements of higher-order correlation functions. Using entangled photons and a pseudo-thermal light source for the imaging of objects, we predict and experimentally confirm the existence of optimal photon correlations providing for the best image resolution. Also, a short overview of the scientific activities of the Centre for Quantum Optics and Quantum Information (IP NASB, Minsk, Belarus) will be presented.