Registration Number
0222U003297,
0120U104878
, R & D reports
Title
Nonclassical and hybrid correlations of quantum systems under realistic conditions
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Head
Semenov Andrii О., Доктор фізико-математичних наук
Registration Date
24-02-2022
Organization
М.М.Bogolyubov Institute of Theoretical Physics of the National Academy of Sciences of Ukraine
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Object of research – non-niversal quantum computers, Josephson photomultipliers, quantum light in the turbulent atmosphere.
Objectives – obtaining the probability distribution of photocounting for schemes of Gaussian and Fock boson sampling in the case of using superconducting nanowire single-photon detectors; obtaining the photodetection formula for the method of continuous-wave detection with Josephson photomultipliers; time-coherence theory for atmospheric quantum channels.
Methods – photodetection theory; applying the positive operator-valued measure to description of realistic photodetection; quantum phase space; the method of photon density function; the phase¬screen method.
Results:
Probability distribution of photon numbers for schemes of Gaussian and Fock boson sampling is obtained for the case of using superconducting nanowire single-photon detectors. We have found a general expression describing photocounting statistics for arbitrary detectors. Joint and local photocounting distributions have been obtained for nonlocal Gaussian boson sampling with two-mode squeezed vacuum states. Two-time probability distributions of transmittance for free-space channels are obtained. Based on this, we have built probability distributions of transmittance for time sub-channels of free-space channels.
Product Description
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Yeremenko Ivan S.
Baskov Roman A.
Kovtonyuk Vadym S.
Semenov Andrii Oleksandrovych
Sokolov Andrii M.
Uzunova Vira Oleksandrivna
Yurin Mykyta D.
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2022-03-09
