Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Salvia, Raffaele"'
Publikováno v:
Phys. Rev. A 110, 012213 (2024)
We study the possibility of deterministic protocols for extracting work from quantum systems. Focusing on the two-point measurement work extraction scenario, we prove that, with enough copies of the system, such zero-fluctuation protocols always exis
Externí odkaz:
http://arxiv.org/abs/2402.16964
Quantum work capacitances and maximal asymptotic work/energy ratios are figures of merit characterizing the robustness against noise of work extraction processes in quantum batteries formed by collections of quantum systems. In this paper we establis
Externí odkaz:
http://arxiv.org/abs/2305.16803
Publikováno v:
Phys. Rev. Lett. 131, 060402 (2023)
We demonstrate an asymmetry between the beneficial effects one can obtain using non-local operations and non-local states to mitigate the detrimental effects of environmental noise in the work extraction from quantum battery models. Specifically, we
Externí odkaz:
http://arxiv.org/abs/2304.01270
Autor:
Yang, Xue, Yang, Yan-Han, Alimuddin, Mir, Salvia, Raffaele, Fei, Shao-Ming, Zhao, Li-Ming, Nimmrichter, Stefan, Luo, Ming-Xing
Publikováno v:
Physical Review Letters 131,030402(2023) (Cover)
The quantum battery capacity is introduced in this letter as a figure of merit that expresses the potential of a quantum system to store and supply energy. It is defined as the difference between the highest and the lowest energy that can be reached
Externí odkaz:
http://arxiv.org/abs/2302.09905
Publikováno v:
Phys. Rev. Lett.130, 240803 (2023)
We investigate critical quantum metrology,that is the estimation of parameters in many-body systems close to a quantum critical point, through the lens of Bayesian inference theory. We first derive a no-go result stating that any non-adaptive measure
Externí odkaz:
http://arxiv.org/abs/2211.07688
Publikováno v:
SciPost Phys. 17, 041 (2024)
We present a theoretical analysis of the energy recovery efficiency for quantum batteries composed of many identical quantum cells undergoing noise. While the possibility of using quantum effects to speed up the charging processes of batteries have b
Externí odkaz:
http://arxiv.org/abs/2211.02685
Publikováno v:
Phys. Rev. A 107, 012405 (2023)
We investigate the problem of finding the local analogue of the ergotropy, that is the maximum work that can be extracted from a system if we can only apply local unitary transformation acting on a given subsystem. In particular, we provide a closed
Externí odkaz:
http://arxiv.org/abs/2206.14842
Autor:
Salvia, Raffaele, Perarnau-Llobet, Martí, Haack, Géraldine, Brunner, Nicolas, Nimmrichter, Stefan
Publikováno v:
Phys. Rev. Research 5, 013155 (2023)
Recently, an unconditional advantage has been demonstrated for the process of charging of a quantum battery in a collisional model. Motivated by the question of whether such an advantage could be observed experimentally, we consider a model where the
Externí odkaz:
http://arxiv.org/abs/2205.00026
Publikováno v:
Phys. Rev. A 105, 012414 (2022)
The presence of correlations in the input state of a non-interacting many-body quantum system can lead to an increase in the amount of work we can extract from it under global unitary processes (ergotropy). The present work explore such effect on tra
Externí odkaz:
http://arxiv.org/abs/2110.06219
Publikováno v:
Phys. Rev. Lett. 127, 210601 (2021)
We study the transferring of useful energy (work) along a transmission line that allows for partial preservation of quantum coherence. As a figure of merit we adopt the maximum values that ergotropy, total ergotropy, and non-equilibrium free-energy a
Externí odkaz:
http://arxiv.org/abs/2104.11255