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.
Settore FIS/03 - Fisica della Materia
Electronic, Optical and Magnetic Materials; Condensed Matter Physics
File in questo prodotto:
File Dimensione Formato  
PhysRevB.98.205423.pdf

accesso aperto

Tipologia: Published version
Licenza: Non pubblico
Dimensione 636.7 kB
Formato Adobe PDF
636.7 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11384/77678
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 67
  • ???jsp.display-item.citation.isi??? 67
social impact