Papers by Leonid Yatsenko
This book presents some of the latest achievements in nanotechnology and nanomaterials from leadi... more This book presents some of the latest achievements in nanotechnology and nanomaterials from leading researchers in Ukraine, Europe, and beyond. It features contributions from participants in the 2nd International Summer School “Nanotechnology: From Fundamental Research to Innovations” and International Research and Practice Conference “Nanotechnology and Nanomaterials”, NANO-2013, which were held in Bukovel, Ukraine on August 25-September 1, 2013. These events took place within the framework of the European Commission FP7 project Nanotwinning, and were organized jointly by the Institute of Physics of the National Academy of Sciences of Ukraine, University of Tartu (Estonia), University of Turin (Italy), and Pierre and Marie Curie University (France). Internationally recognized experts from a wide range of universities and research institutions share their knowledge and key results on topics ranging from nanooptics, nanoplasmonics, and interface studies to energy storage and biomedic...
Ukrainian Journal of Physics, Feb 21, 2019
Springer Proceedings in Physics, 2017
A new trap for atoms and small particles based on the interaction between an atom and the field o... more A new trap for atoms and small particles based on the interaction between an atom and the field of counter-propagating light pulses that are partially superposed in time has been proposed. A substantial difference from the known analogs consists in that the atom-field interaction is close to the adiabatic one, which allows a considerably higher momentum to be transferred to the atom within the same time interval and makes the trap smaller in size. It has been shown that, owing to the dependence of the light pressure force on the atom velocity, the atomic ensemble is cooled at its interaction with the field.
Springer Proceedings in Physics, 2015
Springer Proceedings in Physics, 2021
Experiments under way will provide high-resolution studies of the Autler-Townes effect in molecul... more Experiments under way will provide high-resolution studies of the Autler-Townes effect in molecules, observed as fluorescence from both upper and intermediate levels in a three-level ladder coupled by two laser fields.
The Journal of Chemical Physics, 2000
The interaction between a three-level atom and a polychromatic field with an equidistant spectrum... more The interaction between a three-level atom and a polychromatic field with an equidistant spectrum (\Lambda-scheme of the atom--field interaction) has been studied theoretically. It is shown that the interaction of an atom with such a field can be reduced to its interaction with a bichromatic field with additional light shifts of transition frequencies and an additional coupling of the lower atomic levels, which is proportional to the field intensity. Owing to this coupling, the idea of the coherent population trapping can be considered only as an approximation, because the dark state is not an eigenstate of the effective Hamiltonian in the general case of arbitrary dipole moments. The analyzed model gives a simple theoretical interpretation for the formation of the atomic state, which is close to the coherent population trapping, in the radiation field of a femtosecond laser.
The interaction between a three-level atom and a polychromatic field with an equidistant spectrum... more The interaction between a three-level atom and a polychromatic field with an equidistant spectrum (\Lambda-scheme of the atom--field interaction) has been studied theoretically. It is shown that the interaction of an atom with such a field can be reduced to its interaction with a bichromatic field with additional light shifts of transition frequencies and an additional coupling of the lower atomic levels, which is proportional to the field intensity. Owing to this coupling, the idea of the coherent population trapping can be considered only as an approximation, because the dark state is not an eigenstate of the effective Hamiltonian in the general case of arbitrary dipole moments. The analyzed model gives a simple theoretical interpretation for the formation of the atomic state, which is close to the coherent population trapping, in the radiation field of a femtosecond laser.
Optics Communications, 2011
We propose a simple and powerful protocol to map an arbitrary atomic coherence between two quantu... more We propose a simple and powerful protocol to map an arbitrary atomic coherence between two quantum states into a population distribution of three metastable states, and later to retrieve the atomic coherence from the population distribution. The protocol applies simple sequences of radiation pulses with arbitrary temporal profile, either as coincident or as consecutive pulses. Mapping of rather short-lived atomic
Part I: Nano composites and Nano structures.- Deposition and Characterization of Nanocomposition ... more Part I: Nano composites and Nano structures.- Deposition and Characterization of Nanocomposition Cr3C2-TaC-NiCr Coating by Multi-Chamber Detonation Sprayer.- Biomimetic Composites Reinforced by Branched Nanofibers.- Kinetics of Dispersion-coagulation during Annealing of Metal Nanofilms Deposited onto the Surface of Non-metallic Materials.- Magnetization in Nanostructures with Strong-Spin-Orbit Interaction.- Molecular Dynamics of Thin Mesogene Layer Covering Carbon Nanotube.- Computer Simulation of Cholesterol Molecules Embedded in High-Density Lipoprotein.- Design and Characterization of in situ Synthesized Hybrid Polymeric Materials.- The Properties of Water Nanostructures in Nanosystems.- 3-D Artificial Nanodiamonds Containing Nanocomposites Based on Hybrid Polyurethane-poly(2-hydroxyethyl methacrylate) Polymer Matrix.- Spin-crossover Nanocrystals and Ising Model.- Formulation and Rheology of Tape Casting Suspensions Based on BaTiO3 Nanopowders-. Nanodimension Layers on Stainless ...
We carry out necessary theoretical justifications for the method of recoil nuclei in application ... more We carry out necessary theoretical justifications for the method of recoil nuclei in application to direct observation of the Th-229m isomeric state. We consider Cherenkov radiation, phosphorescence and fluorescence in the crystal plate which is used for collecting of thorium recoil nuclei and discuss the ways to avoid these parasitic signals revealing the Th-229m decay photons.
We apply Monte Carlo wave function method and classical mechanics to description of the atomic mo... more We apply Monte Carlo wave function method and classical mechanics to description of the atomic motion in the field of laser radiation. Simultaneous use of quantum and classical mechanics for description of inner and translational motion avoids quantization of the translational degrees of freedom. The calculation are carried out for the example of atomic motion in the field of counter-propagating laser waves, one of which repeats the other. It is shown that such scheme of the atom-field interaction leads to confinement of atoms and their cooling by the same laser beams for proper the atom-field interaction parameters. The cases of laser pulses, bichromatic waves and stochastic field (the model of coloured noise) are analyzed.
Springer Proceedings in Physics, 2016
Soviet Journal of Quantum Electronics
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Papers by Leonid Yatsenko