Sergiy Lyagushyn

Sergiy F. Lyagushyn was born in 1955 in Dnipropetrovs’k (Ukraine, USSR). Graduated from the Physical Department of M.V. Lomonosov Moscow State University in 1978. Studied and worked at the Quantum Statistics and Field Theory Division headed by Academician N.N. Bogolyubov. Finished post-graduate courses in Moscow State University in 1988 (supervisor – Prof. N.N. Bogolyubov (Jr.)). Defended a thesis “Correlation Effects in Radiation of Systems with Finite Number of Levels” in 1989. Worked in Dnipropetrovs’k since 1988. Dealt with problems of rocket thrusters and space power supply in Experimental Design Office “Foton”. Published some papers devoted to renewable power sources, diffraction optical elements, and space solar power. Was a member of two committees of the International Astronautical Federation in 1990-ies. Since 1992 Associate Professor of the Quantum Macrophysics Division of Dnipropetrovs’k University (now – Theoretical Physics Division), in 1994-2007 Deputy Dean of the Physics Department. Present sphere of scientific interests – nonequilibrium statistical physics and quantum optics. Main publications on this field – in Physica A, Physics of Particles and Nuclei, Journal of Dnipropetrovs’k National University (Physics & Radioelectronics series).

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The book embraces a wide spectrum of problems falling under the concepts of "Quantum optics" and "Laser experiments". These actively developing branches of physics are of great significance both for theoretical understanding of the quantum nature of optical phenomena and for practical applications. The book includes theoretical contributions devoted to such problems as providing a general approach to describe electromagnetic field states with correlation functions of different nature, nonclassical properties of some superpositions of field states in time-varying media, photon localization, mathematical apparatus that is necessary for field state reconstruction on the basis of restricted set of observables, and quantum electrodynamics processes in strong fields provided by pulsed laser beams. Experimental contributions are presented in chapters about some quantum optics processes in photonic crystals - media with spatially modulated dielectric properties - and chapters dealing with the formation of cloud of cold atoms in magneto optical trap. All chapters provide the necessary basic knowledge of the phenomena under discussion and well-explained mathematical calculations.

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