Charging Dynamics in a Distance-Modulated Planar Quantum-Battery Architecture

• URL: http://arxiv.org/abs/2604.22878v1
• Date: Fri, 24 Apr 2026 03:06:20 GMT
• Title: Charging Dynamics in a Distance-Modulated Planar Quantum-Battery Architecture
• Abstract summary: We propose a planar many-body quantum-battery architecture consisting of coupled resonators.<n>We investigate the open-system charging dynamics in the strong-coupling regime using a Redfield master-equation approach.<n>Results highlight the critical role of geometry-controlled interactions in many-body quantum batteries.
• Score: 4.227716615390051
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: While the spatial arrangement of individual units is essential for the physical implementation of quantum batteries, geometry-dependent interactions are rarely explicitly incorporated into existing theoretical models. To address this, we propose a planar many-body quantum-battery architecture consisting of coupled resonators. By introducing a distance-dependent function to modulate both the inter-battery coupling and tunneling, we investigate the open-system charging dynamics in the strong-coupling regime using a Redfield master-equation approach. Using ergotropy as the primary figure of merit, we demonstrate that the charging performance is highly sensitive to the inter-battery distance, nearest-neighbor coupling strength, and environmental conditions. Specifically, decreasing the inter-battery distance within an optimal window suppresses charging fluctuations and accelerates the system's approach to a steady charged state. However, an excessively short distance amplifies environmental dissipation, thereby degrading the overall performance. Furthermore, while overly strong inter-battery coupling induces post-charging instability, moderate coupling achieves a favorable balance between maximum stored energy and stability. We also establish that the system-bath coupling and bath cutoff frequency predominantly govern the charging timescale, and that the planar architecture maintains its robustness against thermal fluctuations over a broad temperature range. These results highlight the critical role of geometry-controlled interactions in many-body quantum batteries, providing a theoretical foundation for the design and optimization of two-dimensional quantum energy-storage devices.

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