Codimension-2 defects and higher symmetries in (3+ 1) D topological phases

M Barkeshli, YA Chen, SJ Huang, R Kobayashi… - SciPost Physics, 2023 - scipost.org
D topological phases of matter can host a broad class of non-trivial topological defects of
codimension-1, 2, and 3, of which the well-known point charges and flux loops are special …

Matrix product operator symmetries and intertwiners in string-nets with domain walls

L Lootens, J Fuchs, J Haegeman, C Schweigert… - SciPost Physics, 2021 - scipost.org
We provide a description of virtual non-local matrix product operator (MPO) symmetries in
projected entangled pair state (PEPS) representations of string-net models. Given such a …

[HTML][HTML] The boundaries and twist defects of the color code and their applications to topological quantum computation

MS Kesselring, F Pastawski, J Eisert, BJ Brown - Quantum, 2018 - quantum-journal.org
The color code is both an interesting example of an exactly solved topologically ordered
phase of matter and also among the most promising candidate models to realize fault …

Composing topological domain walls and anyon mobility

P Huston, F Burnell, C Jones, D Penneys - SciPost Physics, 2023 - scipost.org
Topological domain walls separating 2+ 1 dimensional topologically ordered phases can be
understood in terms of Witt equivalences between the UMTCs describing anyons in the bulk …

Higher-group symmetry of (3+1)D fermionic gauge theory: Logical CCZ, CS, and T gates from higher symmetry

M Barkeshli, PS Hsin, R Kobayashi - SciPost Physics, 2024 - scipost.org
It has recently been understood that the complete global symmetry of finite group topological
gauge theories contains the structure of a higher-group. Here we study the higher-group …

Topological aspects of the critical three-state Potts model

R Vanhove, L Lootens, HH Tu… - Journal of Physics A …, 2022 - iopscience.iop.org
We explore the topological defects of the critical three-state Potts spin system on the torus,
Klein bottle and cylinder. A complete characterization is obtained by breaking down the …

Computing data for Levin-Wen with defects

JC Bridgeman, D Barter - Quantum, 2020 - quantum-journal.org
Computing data for Levin-Wen with defects Page 1 Computing data for Levin-Wen with defects
Jacob C. Bridgeman1 and Daniel Barter2 1Perimeter Institute for Theoretical Physics, Waterloo …

Bulk-to-boundary anyon fusion from microscopic models

JC Magdalena de la Fuente, J Eisert… - Journal of Mathematical …, 2023 - pubs.aip.org
Topological quantum error correction based on the manipulation of the anyonic defects
constitutes one of the most promising frameworks towards realizing fault-tolerant quantum …

On generalized symmetries and structure of modular categories

SX Cui, MS Zini, Z Wang - Science China Mathematics, 2019 - Springer
Pursuing a generalization of group symmetries of modular categories to category
symmetries in topological phases of matter, we study linear Hopf monads. The main goal is …

Microscopic models for fusion categories

R Wolf - arXiv preprint arXiv:2101.04154, 2021 - arxiv.org
This is a PhD Thesis on the connection between subfactors (more precisely, their
corresponding fusion categories) and Conformal Field Theory (CFT). Besides being a …