We present a systematic analysis and classification of several models of quantum batteries involving different combinations of two-level systems and quantum harmonic oscillators. In particular, we study energy-transfer processes from a given quantum system, termed a "charger," to another one, i.e., the proper "battery." In this setting, we analyze different figures of merit, including the charging time, the maximum energy transfer, and the average charging power. The role of coupling Hamiltonians which do not preserve the number of local excitations in the charger-battery system is clarified by properly accounting for them in the global energy balance of the model.

Charger-mediated energy transfer in exactly solvable models for quantum batteries

Andolina, Gian Marcello;Farina, Donato;Mari, Andrea;Pellegrini, Vittorio;Giovannetti, Vittorio;Polini, Marco
2018

Abstract

We present a systematic analysis and classification of several models of quantum batteries involving different combinations of two-level systems and quantum harmonic oscillators. In particular, we study energy-transfer processes from a given quantum system, termed a "charger," to another one, i.e., the proper "battery." In this setting, we analyze different figures of merit, including the charging time, the maximum energy transfer, and the average charging power. The role of coupling Hamiltonians which do not preserve the number of local excitations in the charger-battery system is clarified by properly accounting for them in the global energy balance of the model.
2018
Settore FIS/03 - Fisica della Materia
Electronic, Optical and Magnetic Materials; Condensed Matter Physics
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/77678
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