3 papers
cond-mat.mes-hall2025
Quantum stochastic resonance in a single-photon emitter
H. Mannel, J. Zöllner, E. Kleinherbers +8
Stochastic resonance is a phenomenon in which fluctuations enhance an otherwise weak signal. It has been found in many different systems in paleoclimatology, biology, medicine, and…
cond-mat.str-el2025
Relaxation to persistent currents in a Hubbard trimer coupled to fermionic baths
Nikodem Szpak, Gernot Schaller, Ralf Schützhold +1
We consider a ring of fermionic quantum sites, modeled by the Fermi--Hubbard Hamiltonian, in which electrons can move and interact strongly via the Coulomb repulsion. The system is…
cond-mat.mes-hall2025
Effective time-dependent temperature for fermionic master equations beyond the Markov and the secular approximations
Lukas Litzba, Eric Kleinherbers, Jürgen König +2
We consider a fermionic quantum system exchanging particles with an environment at a fixed temperature and study its reduced evolution by means of a Redfield-I equation with time-d…