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.

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

Tirone, Salvatore;Salvia, Raffaele;Chessa, Stefano;Giovannetti, Vittorio
2023

Abstract

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.
2023
Settore PHYS-04/A - Fisica teorica della materia, modelli, metodi matematici e applicazioni
Quantum Physics; Quantum Batteries
   Taming complexity with quantum strategies: a hybrid integrated photonics approach. Cod. 2017SRNBRK_004
   Ministero della pubblica istruzione, dell'università e della ricerca

   Quantum Pathfinder
   PRO3
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/148723
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