9 papers
Noise-Assisted Metastability: From Lévy Flights to Memristors, Quantum Escape, and Josephson-based Axion Searches
Claudio Guarcello, Alexander A. Dubkov, Davide Valenti +1
Many-body and complex systems, both classical and quantum, often exhibit slow, nonlinear relaxation toward stationary states due to the presence of metastable configurations and en…
Momentum-resolved two-dimensional spectroscopy as a probe of nonlinear quantum field dynamics
Duilio De Santis, Alex Gómez Salvador, Nataliia Bazhan +6
Emergent collective excitations constitute a hallmark of interacting quantum many-body systems, yet in solid-state platforms their study has been largely limited by the constraints…
Effect of 2 harmonic current--phase relation on a behavior of a Josephson Traveling Wave Parametric Amplifier
Claudio Guarcello, Carlo Barone, Giovanni Carapella +3
We numerically investigate the behavior of a Josephson traveling wave parametric amplifier assuming a current-phase relation with a second--harmonic contribution. We find that vary…
Edelstein Effect in Isotropic and Anisotropic Rashba Models
Irene Gaiardoni, Mattia Trama, Alfonso Maiellaro +3
We investigate spin-to-charge conversion via the Edelstein effect in a 2D Rashba electron gas using the semiclassical Boltzmann approach. We analyze the magnetization arising from…
Effects of correlated noise on the excitation of robust breathers in an ac-driven, lossy sine-Gordon system
Giovanni Di Fresco, Duilio De Santis, Claudio Guarcello +3
Thermal noise and harmonic forcing have recently been shown to cooperatively excite sine-Gordon breathers robust to dissipation. Such a phenomenon has been found assuming a Gaussia…
Lévy noise effects on Josephson junctions
Claudio Guarcello
We review three different approaches to investigate the non-equilibrium stochastic dynamics of a Josephson junction affected by Lévy-distributed current fluctuations. First, we st…