Zobrazeno 1 - 10
of 1 578
pro vyhledávání: '"Savona, P."'
We address the challenge of simulating unitary quantum dynamics in large systems using Neural Quantum States, focusing on overcoming the computational instabilities and high cost of existing methods. This work offers a comprehensive formalization of
Externí odkaz:
http://arxiv.org/abs/2410.10720
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:
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
The simulation of many-body open quantum systems is key to solving numerous outstanding problems in physics, chemistry, material science, and in the development of quantum technologies. Near-term quantum computers may bring considerable advantage for
Externí odkaz:
http://arxiv.org/abs/2403.05908
Autor:
Gravina, Luca, Savona, Vincenzo
We introduce a novel, model-independent method for the efficient simulation of low-entropy systems, whose dynamics can be accurately described with a limited number of states. Our method leverages the time-dependent variational principle to efficient
Externí odkaz:
http://arxiv.org/abs/2312.13676
Autor:
Savona, Roberto, Alberini, Cristina Maria, Alessi, Lucia, Baussano, Iacopo, Dellaportas, Petros, Guerra, Ranieri, Khozin, Sean, Modena, Andrea, Pecorelli, Sergio, Rasi, Guido, Siviero, Paolo Daniele, Stein, Roger M.
A major gap exists between the conceptual suggestion of how much a nation should invest in science, innovation, and technology, and the practical implementation of what is done. We identify 4 critical challenges that must be address in order to devel
Externí odkaz:
http://arxiv.org/abs/2312.07065
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 method to simulate the dynamics of large driven-dissipative many-body open quantum systems using a variational encoding of the Wigner or Husimi-Q quasi-probability distributions. The method relies on Monte-Carlo sampling to maintain a po
Externí odkaz:
http://arxiv.org/abs/2307.07429
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