8 papers
Boltzmann-Loschmidt dispute reloaded quantum 150 years later
Leonardo Ermann, Alexei D. Chepelianskii, Dima L. Shepelyansky
The Boltzmann-Loschmidt dispute of 1876 questioned the possibility of a statistical irreversible description by time reversible classical equations of motion of atoms. Here we show…
Kicked fluxonium with quantum strange attractor
Alexei D. Chepelianskii, Dima L. Shepelyansky
The quantum dissipative time evolution of a fluxonium under a pulsed field (kicks) is studied numerically and analytically. In the classical limit the system dynamics is converged…
Analytical approach to the magneto-fluorescence of triplet excitons
Yan Sun, A. D. Chepelianskii
The fluorescence of triplet excitons and color-centers is strongly dependent on magnetic field that mixes the zero field spin eigenstates that determine the radiative recombination…
Room temperature optical control of spin states in organic diradicals
Rituparno Chowdhury, Alistair Inglis, Lucy E. Walker +13
We report a family of luminescent alternant diradicals which, at room temperature, support a ground-state spin-triplet, near-unity photoluminescence quantum yields, and optical spi…
Dynamical thermalization, Rayleigh-Jeans condensate, vortexes and wave collapse in quantum chaos fibers and fluid of light
Leonardo Ermann, Alexei D. Chepelianskii, Dima L. Shepelyansky
We study analytically and numerically the time evolution of a nonlinear field described by the nonlinear Schrödinger equation in a chaotic -shape billiard. In absence of nonlin…
Spin dependent fluorescence mediated by anti-symmetric exchange in triplet exciton pairs
Yan Sun, M. Monteverde, V. Derkach +4
Singlet fission and triplet-triplet annihilation (TTA) are spin-dependent phenomena critical to optoelectronics. The dynamics of spin populations during geminate triplet pair separ…