Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Cavina, Vasco"'
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:
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
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
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
Starting from a microscopic system-baths description, we derive the general conditions for a time-local quantum master equation (QME) to satisfy the first and second law of thermodynamics at the fluctuating level. Using counting statistics, we show t
Externí odkaz:
http://arxiv.org/abs/2207.05719
Publikováno v:
Phys. Rev. A 106, 042609 (2022)
We analyze the capability of discriminating the statistical nature of a thermal bath by exploiting the interaction with an additional environment. We first shows that, at difference with the standard scenario where the additional environment is not p
Externí odkaz:
http://arxiv.org/abs/2202.12239
Publikováno v:
Phys. Rev. A 104, 032226 (2021)
We study the optimization of the performance of arbitrary periodically driven thermal machines. Within the assumption of fast modulation of the driving parameters, we derive the optimal cycle that universally maximizes the extracted power of heat eng
Externí odkaz:
http://arxiv.org/abs/2010.00586