Quantum work extraction efficiency for noisy quantum batteries: the role of coherence

Autor:	Tirone, Salvatore, Salvia, Raffaele, Chessa, Stefano, Giovannetti, Vittorio
Rok vydání:	2023
Předmět:	Quantum Physics
Druh dokumentu:	Working Paper
Popis:	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 establish a direct connection between these functionals and, exploiting this result, we analyze different types of noise models mimicking self-discharging, thermalization and dephasing effects. In this context we show that input quantum coherence can significantly improve the storage performance of noisy quantum batteries and that the maximum output ergotropy is not always achieved by the maximum available input energy. Comment: 16 pages, 8 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2305.16803 Zobrazit plný text záznamu View this record from Arxiv