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arXiv · 2607.08687

Low-latency FPGA-based electronic control system for fast preparation of defect-free atom arrays

Ya-Dong Hu·Dong-Qi Ma·Tian-Yang Zhang·Liang Chen·Yi-Chen Zhang·Xiao-Kang Zhong·Wen-Yi Zhu·Hong-Jie Fan·Qing-Xuan Jie·Yan-Lei Zhang·Gang Li·Xi-Feng Ren·Xu-Liang Zhang·Guang-Can Guo·Zhu-Bo Wang·Chang-Ling Zou
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Abstract

The scalability of neutral atom quantum computing demands integrated electronic control systems with low latency, modular architecture, and real-time feedback capability. Here, we present an FPGA-based electronic control system that eliminates the PC from the feedback loop, integrating photon counting, real-time decision-making, and waveform generation within a unified PXIe architecture. The system achieves a total feedback latency of $282\,\mathrm{\mu s}$ and is validated in practical experiments by assembling defect-free atom arrays from 24 stochastically loaded optical tweezers. A single-round rearrangement achieves a filling fraction of $\sim96\%$, while feedback-controlled iterative rearrangement over five rounds boosts the success probability for generating a 10-atom defect-free array from $65.7\%$ to $95.4\%$. This system establishes the electronic infrastructure necessary for mid-circuit measurement and real-time quantum error correction on neutral-atom platforms.

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Ya-Dong Hu, Dong-Qi Ma, Tian-Yang Zhang, Liang Chen, Yi-Chen Zhang, Xiao-Kang Zhong, Wen-Yi Zhu, Hong-Jie Fan, Qing-Xuan Jie, Yan-Lei Zhang, Gang Li, Xi-Feng Ren, Xu-Liang Zhang, Guang-Can Guo, Zhu-Bo Wang, Chang-Ling Zou. 2026-07-09. Low-latency FPGA-based electronic control system for fast preparation of defect-free atom arrays. https://arxiv.org/abs/2607.08687

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