132 citations · 260 across the 16 of their papers we have counts for
16 papers
Parity-Resolved Quantum Capacitance and Quantum Inductance in Topological, Trivial, and Normal Nanowire Interferometers
Viktoriia Pinchenkova, Valerii K. Kozin, Maximilian Hünenberger +2
Quantum-capacitance measurements convert the curvature of a quantum-dot energy in a flux-threaded nanowire loop into fast parity-sensitive signals and, therefore, have become a pro…
From coupled Rabi models to the Potts model
Anatoliy I. Lotkov, Valerii K. Kozin, Denis V. Kurlov +2
We study -symmetric Rabi model that describes a three-level system coupled to two bosonic modes. We derive a mapping of the two-mode Rabi model onto a…
Emergent ac Effect in Nonreciprocal Coupled Condensates
Ji Zou, Valerii K. Kozin, Daniel Loss +1
We report an emergent ac Josephson-like effect arising without external bias, driven by the interplay between nonreciprocity and nonlinearity in coupled condensates. Using a minima…
Cat states in one- and two-mode Rabi models
Anatoliy I. Lotkov, Denis V. Kurlov, Valerii K. Kozin +2
We investigate one- and two-mode variants of the -symmetric quantum Rabi model, which describe the interaction of a qutrit with one or two bosonic modes and are direc…
Schottky anomaly in a cavity-coupled double quantum well
Valerii K. Kozin, Dmitry Miserev, Daniel Loss +1
We present a theoretical study of a mesoscopic two-dimensional electron gas confined in a double quantum well that is coupled to a uniform quasi-static cavity mode via fluctuations…
Cavity-enhanced superconductivity via band engineering
Valerii K. Kozin, Even Thingstad, Daniel Loss +1
We consider a two-dimensional electron gas interacting with a quantized cavity mode. We find that the coupling between the electrons and the photons in the cavity enhances the supe…
Electrostatic control of nonlinear photonic-crystal polaritons in a monolayer semiconductor
Ekaterina Khestanova, Vanik Shahnazaryan, Valerii K. Kozin +6
Integration of 2D semiconductors with photonic crystal slabs provides an attractive approach to achieve strong light--matter coupling and exciton-polariton formation in a planar ch…
Quantum phase transitions and cat states in cavity-coupled quantum dots
Valerii K. Kozin, Dmitry Miserev, Daniel Loss +1
We study double quantum dots coupled to a quasistatic cavity mode with high mode-volume compression allowing for strong light-matter coupling. Besides the cavity-mediated interacti…
QDistRnd: A GAP package for computing the distance of quantum error-correcting codes
Leonid P. Pryadko, Vadim A. Shabashov, Valerii K. Kozin
The GAP package QDistRnd implements a probabilistic algorithm for finding the minimum distance of a quantum low-density parity-check code linear over a finite field GF(q). At each…
Cavity-induced charge transfer in periodic systems: length-gauge formalism
Ekaterina Vlasiuk, Valerii K. Kozin, Jelena Klinovaja +3
We develop a length-gauge formalism for treating one-dimensional periodic lattice systems in the presence of a photon cavity inducing light-matter interaction. The purpose of the f…
Machine learning of phase transitions in nonlinear polariton lattices
D. Zvyagintseva, H. Sigurdsson, V. K. Kozin +4
Polaritonic lattices offer a unique testbed for studying nonlinear driven-dissipative physics. They show qualitative changes of a steady state as a function of system parameters, w…
Enhancement of second-harmonic generation in micropillar resonator due to the engineered destructive interference
Stanislav Kolodny, Valerii Kozin, Ivan Iorsh
We show, that engineering the cavity aspect ratio of AlGaAs micropillar resonator allows for the two order of magnitude increase in the efficiency of second harmonic generation at…
Chiral waveguide optomechanics: first order quantum phase transitions with symmetry breaking/
Denis Sedov, Valerii Kozin, Ivan Iorsh
We present a direct mapping between the quantum optomechanical problem of the atoms harmonically trapped in the vicinity of a chiral waveguide and a generalized quantum Rabi model…
Reply to "Comment on "Quantum Time Crystals from Hamiltonians with Long-Range Interactions""
Valerii K. Kozin, Oleksandr Kyriienko
In the note by Khemani et al. [arXiv:2001.11037] the authors express conceptual disagreement with our recent paper on quantum time crystals [Phys. Rev. Lett. 123, 210602]. They cri…
Quantum Time Crystals from Hamiltonians with Long-Range Interactions
Valerii K. Kozin, Oleksandr Kyriienko
Time crystals correspond to a phase of matter where time-translational symmetry (TTS) is broken. Up to date, they are well studied in open quantum systems, where external drive all…
A connection between -invariants and Yang-Baxter -operators in super-Yang-Mills theory
V. K. Kozin
The BCFW recursion relation in super-Yang-Mills theory is solved using Yang-Baxter -operators in the NMHV sector. Explicit expressions for -invarian…