Zobrazeno 1 - 10
of 2 173
pro vyhledávání: '"Cavina A"'
We study the influence of single-atom dissipation and dephasing noise on the performance of Dicke and Tavis-Cummings quantum batteries, where the electromagnetic field of the cavity hosting the system acts as a charger. For these models a genuine cha
Externí odkaz:
http://arxiv.org/abs/2409.20475
Autor:
Cavina, Vasco, Esposito, Massimiliano
We introduce a non-equilibrium version of the Caldeira-Leggett model in which a quantum particle is strongly coupled to a set of engineered reservoirs. The reservoirs are composed by collections of squeezed and displaced thermal modes, in contrast to
Externí odkaz:
http://arxiv.org/abs/2405.00215
Publikováno v:
Phys. Rev. Lett. 133, 130401 (2024)
We derive a systematic approach to the thermodynamics of quantum systems based on the underlying symmetry groups. We show that the entropy of a system can be described in terms of group-theoretical quantities that are largely independent of the detai
Externí odkaz:
http://arxiv.org/abs/2402.04214
Autor:
Cavina, Michelangelo
In this work we prove formulas of quasi-additivity for the capacity associated to kernels of radial type in the setting of the boundary of a tree structure and in the setting of compact Ahlfors-regular spaces. We also define a notion of harmonic exte
Externí odkaz:
http://arxiv.org/abs/2312.08297
Autor:
Avanzini, Francesco, Bilancioni, Massimo, Cavina, Vasco, Cengio, Sara Dal, Esposito, Massimiliano, Falasco, Gianmaria, Forastiere, Danilo, Freitas, Nahuel, Garilli, Alberto, Harunari, Pedro E., Lecomte, Vivien, Lazarescu, Alexandre, Srinivas, Shesha G. Marehalli, Moslonka, Charles, Neri, Izaak, Penocchio, Emanuele, Piñeros, William D., Polettini, Matteo, Raghu, Adarsh, Raux, Paul, Sekimoto, Ken, Soret, Ariane
Publikováno v:
SciPost Phys. Lect. Notes 80 (2024)
Lecture notes after the doctoral school (Post)Modern Thermodynamics held at the University of Luxembourg, December 2022, 5-7, covering and advancing continuous-time Markov chains, network theory, stochastic thermodynamics, large deviations, determini
Externí odkaz:
http://arxiv.org/abs/2311.01250
Autor:
Cavina, Michelangelo
In this note we analyze the Caffarelli-Silvestre extension function using tools from the theory of stochastic analysis applied to Dirichlet problems. We use a stochastic approach to give the explicit formulation of the kernel associated to the Dirich
Externí odkaz:
http://arxiv.org/abs/2310.01070
The work fluctuation theorem (FT) is a symmetry connecting the moment generating functions (MGFs) of the work extracted in a given process and in its time-reversed counterpart. We show that, equivalently, the FT for work in isolated quantum systems c
Externí odkaz:
http://arxiv.org/abs/2304.03681
Autor:
Cavina, Federico1 (AUTHOR) federico.cavina@terremerse.it, Baiocco, Serena1 (AUTHOR) gpradolesi@terremerse.it, Tomba, Lorenzo2 (AUTHOR) lorenzo.tomba@regione.emilia-romagna.it, Ravaglia, Fabio2 (AUTHOR) fabio.ravaglia@regione.emilia-romagna.it, Moretti, Christian2 (AUTHOR) christian.moretti@regione.emilia-romagna.it, Raso, Rosario2 (AUTHOR) rosario.raso@regione.emilia-romagna.it, Rettore, Valentino Giorgio2 (AUTHOR) valentino.rettore@regione.emilia-romagna.it, Parrilli, Martina2 (AUTHOR) martina.parrilli@regione.emilia-romagna.it, Pradolesi, Gianfranco1 (AUTHOR), Bugiani, Riccardo2 (AUTHOR) riccardo.bugiani@regione.emilia-romagna.it
Publikováno v:
Agronomy. Nov2024, Vol. 14 Issue 11, p2522. 9p.
Publikováno v:
SciPost Phys. 15, 117 (2023)
We introduce a new regularization of the Redfield equation based on a replacement of the Kossakowski matrix with its closest positive semidefinite neighbor. Unlike most of the existing approaches, this procedure is capable of retaining the time depen
Externí odkaz:
http://arxiv.org/abs/2211.04400
Autor:
Mazzoncini, Francesco, Cavina, Vasco, Andolina, Gian Marcello, Erdman, Paolo Andrea, Giovannetti, Vittorio
We investigate the optimal charging processes for several models of quantum batteries, finding how to maximize the energy stored in a given battery with a finite-time modulation of a set of external fields. We approach the problem using advanced tool
Externí odkaz:
http://arxiv.org/abs/2210.04028