Cavity-Mediated Charging of a Graphene Excitonic Quantum Battery

Abstract:We study the charging and work-extraction properties of a graphene-based excitonic quantum battery embedded in a driven-dissipative optical microcavity. The system consists of a pair of intervalley excitons in strained graphene, where one exciton acts as the charger and the other as the quantum battery, both coupled to a common cavity mode through a Tavis-Cummings interaction. By solving the open-system dynamics, we analyze the ergotropy as a measure of extractable work and investigate how coherent and incoherent pumping, cavity loss, and the microcavity parameter influence the charging process. Our results show that the battery exhibits a transient ergotropy peak followed by relaxation to a steady state, with the maximum extractable work strongly controlled by the light-matter coupling strength. The study reveals an optimal regime for efficient charging and demonstrates the role of cavity engineering in enhancing work storage in excitonic quantum batteries.

arXiv:2607.18489 [quant-ph]

(or arXiv:2607.18489v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2607.18489 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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