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arXiv · 2603.02819

Charging power enhancement at the phase transition of a non-integrable quantum battery

D. Farina·M. Sassetti·V. Cataudella·D. Ferraro·N. Traverso Ziani
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Abstract

Exploiting many-body interaction and critical phenomena to improve the performance of quantum batteries is an emerging and promising line of research. A central question in this direction is whether quantum phase transitions can enhance the charging energy or the power. While preliminary works have addressed this problem in fine-tuned integrable models, its characterization in non-integrable systems remains limited due to the demanding numerical requirements. Here, we investigate a one-dimensional Axial Next-Nearest-Neighbor Ising model as an example of non-integrable quantum battery charged via a quantum-quench protocol. In contrast to integrable cases, we find that criticality in this setting can lead to a pronounced enhancement of the charging power. Our findings inform quantum-battery design of many-qubit systems and are amenable to experimental verification on current quantum-simulation platforms, including neutral-atom arrays.

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D. Farina, M. Sassetti, V. Cataudella, D. Ferraro, N. Traverso Ziani. 2026-03-03. Charging power enhancement at the phase transition of a non-integrable quantum battery. https://arxiv.org/abs/2603.02819

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