Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Kolovsky, Andrey"'
We consider a coupled atom-photon system described by the Tavis-Cummings dimer (two coupled cavities) in the presence of photon loss and atomic pumping, to investigate the quantum signature of dissipative chaos. The appropriate classical limit of the
Externí odkaz:
http://arxiv.org/abs/2407.00776
Autor:
Kolovsky, Andrey R.
Publikováno v:
EPL 146 61001 (2024)
We revisit the problem of two-terminal transport of non-interacting Fermi particles in a mesoscopic device. First, we generalize the problem by including into consideration relaxation processes in contacts (which are characterized by the contact self
Externí odkaz:
http://arxiv.org/abs/2402.04262
Autor:
Kolovsky, Andrey R.
Publikováno v:
PRB 110 035410 (2024)
We study effects of relaxation/decoherence processes on quantum transport of non-interacting Fermi particles across the tight-binding chain, where we distinguish between relaxation processes in the contacts (external decoherence) and those in the cha
Externí odkaz:
http://arxiv.org/abs/2311.05995
We propose a simple, yet feasible, model for quantum transport of fermionic carriers across tight-binding chain connecting two reservoirs maintained at arbitrary temperatures and chemical potentials. The model allows for elementary derivation of the
Externí odkaz:
http://arxiv.org/abs/2207.01943
Autor:
Kolovsky, Andrey R.
We revisit the problem of quantum bi- and multi-stability by considering the dissipative Double Resonance Model. For a large driving frequency, this system has a simpler phase structure than the driven dissipative nonlinear oscillator -- the paradigm
Externí odkaz:
http://arxiv.org/abs/2204.06942
Autor:
Kolovsky, Andrey R.
We analyze Josephson's oscillation of Bose particles in the open (dissipative) Bose-Hubbard dimer. First, we excite the dimer from the vacuum state into a state suitable for observing the oscillation by using a special protocol for external driving.
Externí odkaz:
http://arxiv.org/abs/2202.03035
Publikováno v:
Phys. Rev. B 104, 115115 (2021)
We revisit the phenomenon of the resonant transmission of fermionic carriers through a quantum device connected to two contacts with different chemical potentials. We show that, besides the traditional in solid-state physics Landauer-B\"uttiker appro
Externí odkaz:
http://arxiv.org/abs/2106.01839
Autor:
Kolovsky, Andrey R.
We revisit quantum dynamics of the damped and driven nonlinear oscillator. In the classical case this system has two stationary solutions (the limit cycles) in the certain parameter region, which is the origin of the celebrated bistability phenomenon
Externí odkaz:
http://arxiv.org/abs/2002.11373
Autor:
Kolovsky, Andrey R.
Publikováno v:
Phys. Rev. E 101, 062116 (2020)
We revisit the Born-Markov approximation for an open quantum system by considering a microscopic model of the bath, namely, the Bose-Hubbard chain in the parameter region where it is chaotic in the sense of Quantum Chaos. It is shown that strong ergo
Externí odkaz:
http://arxiv.org/abs/2002.07320
Publikováno v:
Phys. Rev. A 100, 013610 (2019)
We theoretically analyze the depletion dynamics of an ensemble of cold atoms in a quasi one-dimensional optical lattice where atoms in one of the lattice sites are subject to decay. Unlike the previous studies of this problem in R. Labouvie, {\em et.
Externí odkaz:
http://arxiv.org/abs/1904.11607