Zobrazeno 1 - 10
of 855
pro vyhledávání: '"Minganti, A."'
We present a method to engineer various zero-energy localized states on disorder-free hypercube graphs. Previous works have already indicated that disorder is not essential for observing localization phenomena in noninteracting systems, with some pro
Externí odkaz:
http://arxiv.org/abs/2410.10763
Autor:
Beaulieu, Guillaume, Minganti, Fabrizio, Frasca, Simone, Scigliuzzo, Marco, Felicetti, Simone, Di Candia, Roberto, Scarlino, Pasquale
Quantum metrology, a cornerstone of quantum technologies, exploits entanglement and superposition to achieve higher precision than classical protocols in parameter estimation tasks. When combined with critical phenomena such as phase transitions, the
Externí odkaz:
http://arxiv.org/abs/2409.19968
Thermalization in quantum many-body systems, the process by which they naturally evolve toward thermal equilibrium, typically unfolds over timescales set by the underlying relaxation mechanisms. Yet, the spatial aspect of thermalization in these syst
Externí odkaz:
http://arxiv.org/abs/2409.12225
Autor:
Minganti, Fabrizio, Biella, Alberto
This text is a short introduction to the physics of driven-dissipative many-body systems, focusing on a few selected topics. Beyond its more ``historical'' interest in the study of atomic physics and quantum optics, presently the modeling and studyin
Externí odkaz:
http://arxiv.org/abs/2407.16855
Autor:
Peyruchat, Leo, Minganti, Fabrizio, Scigliuzzo, Marco, Ferrari, Filippo, Jouanny, Vincent, Nori, Franco, Savona, Vincenzo, Scarlino, Pasquale
Landau-Zener-St\"uckelberg-Majorana (LZSM) interference emerges when the parameters of a $\textit{qubit}$ are periodically modulated across an avoided level crossing. Here, we investigate the occurrence of the LZSM phenomenon in nonlinear multilevel
Externí odkaz:
http://arxiv.org/abs/2404.10051
Publikováno v:
Phys. Rev. Lett. 133, 113802 (2024) [open access]
Non-Hermitian systems have attracted much interest in recent decades, driven partly by the existence of exotic spectral singularities, known as exceptional points (EPs), where the dimensionality of the system evolution operator is reduced. Among vari
Externí odkaz:
http://arxiv.org/abs/2402.15298
Autor:
Beaulieu, Guillaume, Minganti, Fabrizio, Frasca, Simone, Savona, Vincenzo, Felicetti, Simone, Di Candia, Roberto, Scarlino, Pasquale
In open quantum systems, first- and second-order dissipative phase transitions (DPTs) can emerge in the thermodynamic limit from the competition between unitary evolution, driving terms, and dissipation. The order of a DPT is defined by the continuit
Externí odkaz:
http://arxiv.org/abs/2310.13636
Autor:
Minganti, Fabrizio, Mercurio, Alberto, Mauceri, Fabio, Scigliuzzo, Marco, Savasta, Salvatore, Savona, Vincenzo
Publikováno v:
SciPost Phys. 17, 027 (2024)
The vacuum (i.e., the ground state) of a system in ultrastrong light-matter coupling contains particles that cannot be emitted without any dynamical perturbation and is thus called virtual. We propose a protocol for inducing and observing real mechan
Externí odkaz:
http://arxiv.org/abs/2309.15891
We present a new paradigm for the dynamical simulation of interacting many-boson open quantum systems. The method relies on a variational ansatz for the $n$-boson density matrix, in terms of a superposition of photon-added coherent states. It is most
Externí odkaz:
http://arxiv.org/abs/2306.13708
Autor:
Ferrari, Filippo, Gravina, Luca, Eeltink, Debbie, Scarlino, Pasquale, Savona, Vincenzo, Minganti, Fabrizio
We introduce a criterion to characterize quantum chaos in driven-dissipative open quantum systems, based on the spectral decomposition of the Liouvillian and of quantum trajectories. The method generalizes the analysis of the statistical distribution
Externí odkaz:
http://arxiv.org/abs/2305.15479