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, G.M., Farina, D., Mari, A., Pellegrini, V., Giovannetti, V., Polini, M.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 98:20(2018). [10.1103/PhysRevB.98.205423]
Charger-mediated energy transfer in exactly solvable models for quantum batteries
Farina, Donato;
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
