Year: 2026
Type: article
Abstract: We investigate the solid-state implementation of a Dicke-like quantum battery consisting of a two-dimensional material-based Josephson junction inductively coupled to a resonator, using graphene as a representative example. In this configuration, Andreev bound states naturally act as non-interacting, energetically non-degenerate two-level systems, and the setup allows for both single-photon and two-photon resonant processes. The coupling between the LC‑circuit flux and the supercurrent through the junction gives rise to peculiar longitudinal interaction terms that have no counterpart in the conventional Dicke model. We demonstrate that these additional couplings can enhance energy storage for a proper range of parameters. The proposed architecture also enables an alternative, but comparable, charging protocol that relies on tuning the superconducting phase difference across the junction.
Source: Quantum Science and Technology
Institutions: University of Catania, University of Genoa
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,895
OpenAlex ID: W7162114689
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