29 citations · 115 across the 11 of their papers we have counts for
12 papers
A phenomenological universal expression for the condensate fraction in strongly-correlated two-dimensional Bose gases
G. E. Astrakharchik, I. L. Kurbakov, N. A. Asriyan +1
We investigate the relation between non-local and energetic properties in two-dimensional quantum systems of zero-temperature bosons. By analyzing numerous interaction potentials a…
Density-wave-type supersolid of two-dimensional tilted dipolar bosons
A. N. Aleksandrova, I. L. Kurbakov, A. K. Fedorov +1
We predict a stable density-waves-type supersolid phase of a dilute gas of tilted dipolar bosons in a two-dimensional (2D) geometry. This many-body phase is manifested by the forma…
A new type of non-Hermitian phase transition in open systems far from thermal equilibrium
T. T. Sergeev, A. A. Zyablovsky, E. S. Andrianov +3
We demonstrate a new type of non-Hermitian phase transition in open systems far from thermal equilibrium, which takes place in coupled systems interacting with reservoirs at differ…
Quantum communication protocols as a benchmark for quantum computers
A. A. Zhukov, E. O. Kiktenko, A. A. Elistratov +2
We point out that realization of quantum communication protocols in programmable quantum computers provides a deep benchmark for capabilities of real quantum hardware. Particularly…
Optical probing in a bilayer dark-bright condensate system
N. A. Asriyan, I. L. Kurbakov, A. K. Fedorov +1
We consider a bilayer system of two-dimensional Bose-Einstein-condensed dipolar dark excitons (upper layer) and bright ones (bottom layer). We demonstrate that the interlayer inter…
Self-consistent Description of Graphene Quantum Amplifier
Yu. E. Lozovik, I. A. Nechepurenko, A. V. Dorofeenko +3
High level of dissipation in normal metals makes challenging development of active and passive plasmonic devices. One possible solution to this problem is to use alternative materi…
Graphene Spaser Description by Rate Equations
Yu. E. Lozovik, I. A. Nechepurenko, A. V. Dorofeenko +1
In this paper a surface plasmon polariton laser (spaser), which generates surface plasmons in graphene nanoflake, is considered. The peculiarities of spaser, such as strong materia…
Two-dimensional Bose gas of tilted dipoles: roton instability and condensate depletion
A. K. Fedorov, I. L. Kurbakov, Y. E. Shchadilova +1
We predict the effect of the roton instability for a two-dimensional weakly interacting gas of tilted dipoles in a single homogeneous quantum layer. Being typical for strongly corr…
Roton-maxon spectrum and instability for weakly interacting dipolar excitons in a semiconductor layer
A. K. Fedorov, I. L. Kurbakov, Yu. E. Lozovik
The formation of the roton-maxon excitation spectrum and the roton instability effect for a weakly correlated Bose gas of dipolar excitons in a semiconductor layer are predicted. T…
Spaser Spectroscopy with Subwavelength Spatial Resolution
Yuriy E. Lozovik, Igor A. Nechepurenko, Alexander V. Dorofeenko +2
A new method for high-sensitivity subwavelength spectromicroscopy is proposed based on the usage of a spaser (near-field laser) in the form of a scanning probe microscope tip. The…
Low-dimensional weakly interacting Bose gases: non-universal equations of state
G. E. Astrakharchik, J. Boronat, I. L. Kurbakov +2
The zero-temperature equation of state is analyzed in low-dimensional bosonic systems. In the dilute regime the equation of state is universal in terms of the gas parameter, i.e. i…
Ground state properties of a homogeneous 2D system of Bosons with dipolar interactions
G. E. Astrakharchik, J. Boronat, J. Casulleras +2
The ground-state phase properties of a two-dimensional Bose system with dipole-dipole interactions is studied by means of quantum Monte Carlo techniques. Limitations of mean-field…