Interaction-Enhanced Ergotropy in Phase-Driven Andreev Bound State Quantum Batteries
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[Submitted on 23 Jun 2026]
Summary
This paper investigates a phase-driven quantum battery composed of two interacting Andreev bound state (ABS) units, providing a minimal superconducting platform for coherent energy storage. The authors analyze ergotropy dynamics under a superconducting phase ramp, finding that interaction-enhanced avoided-crossing dynamics enables controllable energy storage with optimal charging windows during the Josephson cycle, suggesting phase-programmable energy extraction in superconducting quantum batteries.
Source
bskyInteraction-Enhanced Ergotropy in Phase-Driven Andreev Bound State Quantum Batteriesarxiv.orgKey quotes
· 4 pulledWe investigate a phase-driven quantum battery composed of two interacting Andreev bound state (ABS) units, providing a minimal superconducting platform for coherent energy storage.
In the high-transparency regime relevant for graphene SNS junctions, the interaction enhances the stored extractable work and generates pronounced oscillatory charging dynamics associated with coherent redistribution between coupled ABS sectors.
The phase-resolved evolution further reveals optimal charging windows during the Josephson cycle, indicating the possibility of phase-programmable energy extraction through partial-cycle operation.
Overall, our results identify interaction-assisted avoided-crossing dynamics as a microscopic mechanism for controllable energy storage in superconducting quantum batteries.
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