Scalable classical controllers are a key component of future fault-tolerant quantum computers. Neutral atom quantum computers leverage commercially available optoelectronic devices for generating large-scale tweezer arrays and performing parallel readout, but implementing massively parallel, locally addressed gate operations is an open challenge. In this work, we demonstrate an optical modulator system based on off-the-shelf components, which can generate a two-dimensional array of over 10,000 focused spots with uniform frequency and amplitude, and switching them on and off individually in arbitrary configurations at rates of up to 43 kHz. Through careful control of aberrations, the modulator achieves an extinction ratio of 46 dB, and nearest-neighbor crosstalk of −44dB${-}{{44}}\;{\rm{dB}}$ with a beam spacing of 4.6 waists. The underlying components can operate at wavelengths from the UV to the NIR, and sustain high laser intensities. This approach is suitable for local addressing of gates with low cross-talk error rates in any optically addressed qubit platform, including neutral atoms, trapped ions, or solid-state atomic defects.

中文翻译：

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用于光学寻址量子位的缩放局域控制器

可扩展的经典控制器是未来容错量子计算机的关键组件。中性原子量子计算机利用商用光电器件来生成大规模镊子阵列并执行并行读出，但实现大规模并行、本地寻址的门操作是一个开放的挑战。在这项工作中，我们演示了一种基于现成组件的光调制器系统，该系统可以生成超过 10,000 个具有均匀频率和幅度的聚焦点的二维阵列，并以任意配置以速率单独打开和关闭它们高达 43 kHz。通过仔细控制像差，调制器实现了 46 dB 的消光比和− 44的最近邻串扰d B${-}{{44}}\;{\rm{dB}}$，梁间距为 4.6 腰。底层组件可以在从紫外到近红外的波长范围内工作，并维持高激光强度。该方法适用于任何光学寻址量子位平台中具有低串扰错误率的门的本地寻址，包括中性原子、捕获离子或固态原子缺陷。