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arXiv · 2601.10281

Optimal control of a dissipative micromaser quantum battery in the ultrastrong coupling regime

Maristella Crotti·Luca Razzoli·Luigi Giannelli·Giuseppe A. Falci·Giuliano Benenti
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Abstract

We investigate the open-system dynamics of a micromaser quantum battery in the ultrastrong-coupling (USC) regime. The battery consists of a quantized harmonic mode sequentially interacting, via the Rabi Hamiltonian, with a stream of qubits acting as chargers. USC enhances the charging speed but also induces unbounded energy growth and highly mixed cavity states. Dissipation suppresses this behavior, driving the system to a steady state with finite energy and ergotropy. Using optimal control theory, we show that the interplay between USC and dissipation enhances both charging performance and long-term stability against losses.

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Maristella Crotti, Luca Razzoli, Luigi Giannelli, Giuseppe A. Falci, Giuliano Benenti. 2026-01-15. Optimal control of a dissipative micromaser quantum battery in the ultrastrong coupling regime. https://doi.org/10.1088/2058-9565%2Fae6fe5

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