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Information × Registration Number 0120U104878, ( 0220U104634  0221U106218  0222U003297  0224U001134  ) R & D request Title Nonclassical and hybrid correlations of quantum systems under realistic conditions Head Semenov Andrii Oleksandrovych, Доктор фізико-математичних наук Registration Date 12-11-2020 Organization М.М.Bogolyubov Institute of Theoretical Physics of the National Academy of Sciences of Ukraine popup.description1 Harnessing fundamental properties of quantum world has already resulted in emergence of new concepts, which are expected to have a huge impact in information technologies. Since most of nonclassical properties are susceptible to noise in quantum channels and imperfections of measurement devices, development of techniques overcoming these difficulties is critically important. Based on results already discussed in literature and on our preliminary considerations, we conclude that there exists a group of nonclassical correlations, which possess the needed property of stability with high degree of certainty. The main objectives of this project consist in building a systematic theory of such correlations and in utilizing them for improvement of quantum communication protocols. Particularly, the following objectives are expected to be achieved: (i) Formulation of an appropriate form for description and characterization of nonclassical correlations, which depend on the available information about measurement devices; (ii) Implementation of factors, which hinder distinguishing between adjacent photon numbers, into the photodetection theory; (iii) Consistent description of long-distance free-space channels and time-domain sub-channels; (iv) Application of the obtained results for formulation of innovative quantum-communication protocols. popup.nrat_date 2024-12-10 Close