# Defect-free assembly of 2D clusters of more than 100 single-atom quantum systems

## TL;DR

This paper demonstrates the defect-free assembly of large-scale 2D arrays of neutral atoms, enabling scalable quantum systems for computing, sensing, and simulation with high success rates and reconfigurability.

## Contribution

It introduces a method for rapid, repeated assembly and reconfiguration of large 2D atom arrays, advancing scalable quantum architecture development.

## Key findings

- Successfully assembled 111-atom patterns with high fidelity
- Achieved rapid reconfiguration and pattern reconstruction
- Enabled large-scale entanglement distribution for quantum applications

## Abstract

We demonstrate the defect-free assembly of versatile target patterns of up 111 neutral atoms, building on a 361-site subset of a micro-optical architecture that readily provides thousands of sites for single-atom quantum systems. By performing multiple assembly cycles in rapid succession, we drastically increase achievable structure sizes and success probabilities. We implement repeated target pattern reconstruction after atom loss and deterministic transport of partial atom clusters necessary for distributing entanglement in large-scale systems. This technique will propel assembled-atom architectures beyond the threshold of quantum advantage and into a regime with abundant applications in quantum sensing and metrology, Rydberg-state mediated quantum simulation, and error-corrected quantum computation.