Protocols for Creating Anyons and Defects via Gauging
Abstract
Creating and manipulating anyons and symmetry defects in topological phases, especially those with a non-Abelian character, constitutes a primitive for topological quantum computation. We provide a physical protocol for implementing the ribbon operators of non-Abelian anyons and symmetry defects. We utilize dualities, in particular the Kramers-Wannier or gauging map, which have previously been used to construct topologically ordered ground states by relating them to simpler states. In this work, ribbon operators are implemented by applying a gauging procedure to a lower-dimensional region of such states. This protocol uses sequential unitary circuits or, in certain cases, constant-depth adaptive circuits. We showcase this for anyons and defects in the toric code and quantum double. The general applicability of our method is demonstrated by deriving unitary expressions for ribbon operators of various (twisted) quantum doubles.
Keywords
Cite
@article{arxiv.2411.04181,
title = {Protocols for Creating Anyons and Defects via Gauging},
author = {Anasuya Lyons and Chiu Fan Bowen Lo and Nathanan Tantivasadakarn and Ashvin Vishwanath and Ruben Verresen},
journal= {arXiv preprint arXiv:2411.04181},
year = {2025}
}
Comments
7+18 pages, 3+8 figures. v2: added various references + minor text revisions. v3: additional text revisions for clarity + correction of minor errors in the supplementary