A5074512032- Diamond and Carbon-based Materials Research
- High-pressure geophysics and materials
- Quantum optics and atomic interactions
- Fullerene Chemistry and Applications
- Force Microscopy Techniques and Applications
- Spectroscopy and Quantum Chemical Studies
- Carbon Nanotubes in Composites
- Laser-Matter Interactions and Applications
- Electronic and Structural Properties of Oxides
- Ion-surface interactions and analysis
- Atomic and Subatomic Physics Research
- Chemical Reactions and Isotopes
- Advanced Fiber Laser Technologies
- Electron Spin Resonance Studies
- Semiconductor materials and devices
- Advanced NMR Techniques and Applications
- Molecular Junctions and Nanostructures
- Nonlinear Optical Materials Studies
- Quantum Information and Cryptography
- Photochemistry and Electron Transfer Studies
- Synthesis and Properties of Aromatic Compounds
- Nanotechnology research and applications
- Terahertz technology and applications
- Mechanical and Optical Resonators
- Cold Atom Physics and Bose-Einstein Condensates
National Academy of Sciences of Belarus
2008-2025
Moscow Engineering Physics Institute
2021-2024
B.I. Stepanov Institute of Physics
2013-2023
Belarusian State University of Informatics and Radioelectronics
2019
Belarusian State University
2019
Institute of Physics of the Slovak Academy of Sciences
2005
Institute of Applied Physics
1996-1998
Institute of Physics
1990-1991
Individual paramagnetic defect centers in diamond nanocrystals have been investigated by low-temperature high-resolution optical spectroscopy. Narrow fluorescence excitation spectral lines found, indicating transitions between individual spin sublevels. Spectral diffusion is explained cross relaxation among sublevels and the presence of excited electrons conduction band diamond. The times are millisecond range. system may be useful for quantum information processing with electron spins.
We map out the first excited state sublevel structure of single nitrogen-vacancy (NV) colour centres in diamond. The is an orbital doublet where one branch supports efficient cycling transition, while other can simultaneously support fully allowed optical Raman spin-flip transitions. This crucial for success many recently proposed quantum information applications NV defects. further find that external electric field be used to completely control properties a centre. Finally, group...
Over the past few years, detection of single N-V centers in diamond has attracted much interest, since it is expected to lead innovative applications various domains quantum information. The center a defectconsisting substitutional nitrogen atom adjacent carbon-atom vacancy. optical transition between 3A ground state and 3E excited very high efficiency allowing defect spectroscopy. Because paramagnetic nature electronic state, defects are believed be promising candidates for solid...
Single NV centers in diamond coupled by hyperfine interaction to neighboring 13C nuclear spins are now widely used the emerging quantum technologies as elements of memory adjusted center electron spin qubit. For with low flip-flop rate, single shot readout was demonstrated under ambient conditions. Here we report on systematic search such stable NV-13C systems using density functional theory (DFT) simulate and spatial characteristics all possible complexes H-terminated cluster C510 [NV]-H252...
The article presents the calculation of structural and electronic characteristics a conjugate consisting drug carboplatin (C 6 H 12 N 2 O 4 Pt) fullerenol 60 (OH) 24 ) nanocarrier by HF-3c method. Optimization geometric structure in an aqueous medium was carried out using same level theory polarizable continuum model. To clarify nature intermolecular bond assess strength interaction between molecule fullerenol, topological analysis mechanisms non-covalent performed based on quantum atoms...
Single nitrogen-vacancy (NV) centers in diamond coupled to neighboring nuclear spins are promising candidates for room-temperature applications quantum information processing, sensing and metrology. Here we report on a systematic density functional theory simulation of hyperfine coupling the electronic spin NV center individual 13C arbitrarily disposed H-terminated C291[NV]-H172 cluster hosting center. For 'families' equivalent positions atom lattices around calculated characteristics. first...
It is shown that the dependence of relaxational processes on radiation intensity associated with finiteness correlation time τc perturbations to a great extent defined by statistics these perturbations. Generalized master equations (GME's) take into account nonvanishing are obtained using characteristic operator method. With Gaussian assumption for adiabatic causing stochastic transition-frequency modulation, GME's used reveal main features free-induction-decay rate power. Good agreement...
We suggest overcoming the "Rayleigh catastrophe" and reaching superresolution for imaging with both spatially temporally-correlated field of a superradiant quantum antenna. Considering far-field radiation two interacting spontaneously emitting two-level systems, we show that measurement temporally-delayed second-order correlation function scattered field, Fisher information does not tend to zero diminishing distance between pair scatterers even non-sharp time-averaged detection. For position...
Generalised master equations in two equivalent forms, namely differential (DME) and integro-differential (IDME), are obtained. Both differ from the Bloch ones that they take into account density matrix dynamics during correlation time tau C of relaxational perturbations. On basis these equations, non-linear optical problems high-power radiation absorption, resonance fluorescence spectrum free induction decay signal discussed.
The optically detected coherent response of a single chromophore molecule in an organic host matrix to microwave radiation resonant transition between triplet spin substates is analyzed using model which $N$ independent random telegraph processes produce fluctuations the frequency. Measurements (i) Hahn echoes, (ii) power-broadened line shapes, (iii) transient nutation, and (iv) second-order correlation functions for pentacene molecules...
A consistent explanation of recent studies by Szabo and Muramoto [Phys. Rev. 39, 3992 (1989); 38, 5928 (1988)] on the experimental test modified optical Bloch equations is presented. It shown that observed peculiarities transients in solids are connected with mechanism relaxation systems slow stochastic modulation. theory laser-modified analysis free induction decay (FID), hole burning, rotary echo (RE) such The universal character FID time dependence field-independent RE predicted.