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Information × Registration Number 0220U104634, 0120U104878 , R & D reports Title Nonclassical and hybrid correlations of quantum systems under realistic conditions popup.stage_title Head Semenov Andrii О., Доктор фізико-математичних наук Registration Date 24-12-2020 Organization М.М.Bogolyubov Institute of Theoretical Physics of the National Academy of Sciences of Ukraine popup.description2  Research objects: Optical-field correlations, which cannot be explained by classical theories; Nanowire detectors of optical radiation; Quantum optical fields in the turbulent atmosphere. Objectives: Correct implementation of dead time in the photodetection theory; Theoretical explanations of published experimental data related to atmospheric quantum channels of long distances; Design of theoretical methods for testing hybrid correlations. Research methods: Combinatorial analysis of pulse statistics for nanowire detectors; Quantum phase space; Methods of photon distribution function and phase screens for description of atmospheric quantum channels; Dual form of linear programming problems for analysis of hybrid quantum correlations. General and particular (device-dependent) solutions for the problem of quantum nonlocality in the direct form is found for the case of hybrid of discrete and continuous measurements. An analog of Bell inequalities is obtained for a hybrid configuration, such that one party has information about the measurement device and another does not have it. It is shown that the corresponding correlations are preserved even for unentangled states. Photodetection formula for nanowire detectors is obtained. It is shown that statistics of photocurrent pulses in nanowire detectors significantly differs from photon statistics for different states of the radiation field. Aperture-averaged scintillation index is found for long-distance quantum channels. The results can be applied for explanation of published experimental data. Product Description popup.authors Yeremenko Ivan S. Baskov Roman A. Kovtoniuk Vadym S. Sokolov Andrii M. Uzunova Vira O. Yurin Mykyta D. popup.nrat_date 2020-12-24 Close