Coherent catalyst induced stabilization of ergotropy in open quantum batteries

• URL: http://arxiv.org/abs/2605.27442v1
• Date: Sat, 23 May 2026 07:55:15 GMT
• Title: Coherent catalyst induced stabilization of ergotropy in open quantum batteries
• Abstract summary: coherent interference between different interaction channels generates a decoherence-free-like subspace that suppresses relaxation-induced energy leakage and stabilizes the steady-state ergotropy.<n>The resulting protection mechanism remains effective under strong dissipation and finite-temperature conditions, indicating that interference-assisted coherent control may provide a feasible strategy for robust quantum energy storage in nonequilibrium open systems.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Environmental dissipation and thermal fluctuations fundamentally constrain the extractable work and long-time stability of open quantum batteries. To mitigate dissipation-induced energy degradation without external driving protocols, we propose a cavity-mediated hybrid quantum battery coupled to an auxiliary coherent qubit. Using the Lindblad master equation and ergotropy analysis, we show that coherent interference between different interaction channels generates a decoherence-free-like invariant subspace that suppresses relaxation-induced energy leakage and stabilizes the steady-state ergotropy. The resulting protection mechanism remains effective under strong dissipation and finite-temperature conditions, indicating that interference-assisted coherent control may provide a feasible strategy for robust quantum energy storage in nonequilibrium open systems.

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