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arXiv · 2609.32580

Stable Long-Range Charging and Boundary-Mediated Thresholds in a Waveguide Quantum Battery

Li-Hong Yu·Zhuo-Yu Zhang·Yu Wang·Xin Li
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Abstract

The waveguide-integrated architecture holds promise for scalable on-chip integration of a charger, a transmission channel, and a quantum battery in a modular, independently optimizable design. We investigate a minimal charging configuration consisting of two emitters coupled to a semi-infinite waveguide and identify the optimal charging mechanism, wherein non-Markovian dynamics driven by out-of-band bound states give rise to single-frequency oscillations of the stored energy. We show that near-unity charging efficiency is achievable at weak to moderate coupling strengths via detuning control, provided that the battery-to-boundary separation $n$ is less than three times the charger-to-boundary separation $m$ ($n<3m$)---a constraint imposed by the mirror-induced feedback---while the average charging power decays exponentially with the spatial separation $n-m$. These findings offer useful insights for monolithic solid-state quantum energy storage and transport.

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Li-Hong Yu, Zhuo-Yu Zhang, Yu Wang, Xin Li. 2026-09-26. Stable Long-Range Charging and Boundary-Mediated Thresholds in a Waveguide Quantum Battery. https://arxiv.org/abs/2609.32580

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