21 citations · 68 across the 7 of their papers we have counts for
7 papers
Laser beam fluctuations for long distance propagation in the turbulent atmosphere
V. L. Andriichuk, O. O. Chumak, L. A. Derzhypolska +1
The method of photon distribution function (PDF) is used to study fluctuations of light beams propagating through a turbulent atmosphere. Our analysis concerns the regime of satura…
Fourth-order moment of the light field in atmosphere
Roman Baskov, Oleksandr O. Chumak
The quasiclassical distribution function for photon density in the phase space is obtained from solution of the kinetic equation. This equation describes propagation of paraxial la…
Laser-beam scintillations for weak and moderate turbulence
Roman A. Baskov, Oleksandr O. Chumak
The scintillation index is obtained for the practically important range of weak and moderate atmospheric turbulence. To study this challenging range, the Boltzman-Langevin kinetic…
Correlations of photon trajectories in the problem of light scintillations
Oleksandr O. Chumak, Roman A. Baskov
A distribution function approach is applied to describe the dynamics of the laser beam in the Earth atmosphere. Using a formal solution of the kinetic equation for the distribution…
Photon distribution function for propagation of two-photon pulses in waveguide-qubit systems
Oleksandr O. Chumak, Evgeniy V. Stolyarov
Propagation of a two-photon pulse in a waveguide coupled to a two-level system (TLS) is studied. The pulse is formed by two spatially separated identical wavepackets. A set of equa…
Phase-space distribution functions for photon propagation in waveguides coupled to a qubit
Oleksandr Chumak, Evgeniy Stolyarov
We investigate propagation of few-photon pulses in waveguides coupled to a two-level system by means of the method of distribution functions in coordinate-momentum space that provi…
Modeling and Simulation of a Microstrip-SQUID Amplifier
G. P. Berman, O. O. Chumak, D. I. Kamenev +2
Using a simple lumped-circuit model, we numerically study the dependence of the voltage gain and noise on the amplifier's parameters. Linear, quasi-linear, and nonlinear regimes ar…