Automorphism is All You Need: Transversal Non-Clifford Gates in 2+1D and Higher Symmetries from Automorphism

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• Po-Shen Hsin (King's College London)
• Wednesday 29 October 2025, 10:00-11:00
• Seminar Room 1, Newton Institute.

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BIDW02 - Diving Deeper into Defects: On the Intersection of Field Theory, Quantum Matter, and Mathematics

We study automorphism in twisted gauge theories and discover they can give rise to generalized symmetries such as higher group and/or non-invertible symmetries. Using the automorphism symmetry, we discover transversal non-Clifford logical gates such as T gate in Clifford stabilizer models in 2+1D as well as CCZ gate in 5+1D self correcting non-Abelian quantum memory.The talk is based on works with Ryohei Kobayashi (Institute for Advanced Study) and Guanyu Zhu (IBM)

This talk is part of the Isaac Newton Institute Seminar Series series.

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