A scalable and fast addressing scheme for atomic qubit arrays.

Neutral-atom quantum processors require site-selective optical control that is both fast and scalable. Serial beam-steering approaches provide high-fidelity, single-site gates but scale poorly with array size, while fully parallel array-wide spatial modulation (e.g., SLM/DMD-based illumination) is constrained by limited refresh rates or by limited site-selective control of amplitude and/or phase. We present an addressing architecture that combines the speed of acousto-optic beam steering with parallel, site-resolved control using only a pair of orthogonally oriented acousto-optic deflectors (AODs). One AOD is driven by multiple simultaneous RF tones with programmable amplitude, phase, and timing to create a programmable intensity profile across an entire row (or column) of a 2D atomic array, enabling the parallel application of distinct single-qubit rotations within that row/column using a Raman interaction. The orthogonal AOD rapidly scans between rows/columns, providing efficient coverage of large 2D arrays. We discuss machine-learning-based waveform optimization to realize target intensity profiles while mitigating nonlinear intermodulation products in multi-tone RF drive, and we describe scan-range extension using a galvanometer scanner. We will also report progress toward a proof-of-principle demonstration of site-resolved control across a 10-site register. This approach offers a practical path toward high-throughput, site-selective single-qubit control in large atomic qubit arrays.