# Efficiently preparing Schr\"odinger's cat, fractons and non-Abelian topological order in quantum devices

@inproceedings{Verresen2021EfficientlyPS, title={Efficiently preparing Schr\"odinger's cat, fractons and non-Abelian topological order in quantum devices}, author={R. Verresen and Nathanan Tantivasadakarn and Ashvin Vishwanath}, year={2021} }

Long-range entangled quantum states—like cat states and topological order [1]—are key for quantum metrology and information purposes [2, 3], but they cannot be prepared by any scalable unitary process [4, 5]. Intriguingly, using measurements as an additional ingredient could circumvent such no-go theorems [6–10]. However, efficient schemes are known for only a limited class of long-range entangled states, and their implementation on existing quantum devices via a sequence of gates and…

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