Lecture notes on generalized symmetries and applications

R Luo, QR Wang, YN Wang - Physics Reports, 2024 - Elsevier
In this lecture note, we give a basic introduction to the rapidly developing concepts of
generalized symmetries, from the perspectives of both high energy physics and condensed …

Symmetric mass generation

J Wang, YZ You - Symmetry, 2022 - mdpi.com
The most well-known mechanism for fermions to acquire a mass is the Nambu–Goldstone–
Anderson–Higgs mechanism, ie, after a spontaneous symmetry breaking, a bosonic field …

Non-Abelian topological order and anyons on a trapped-ion processor

M Iqbal, N Tantivasadakarn, R Verresen, SL Campbell… - Nature, 2024 - nature.com
Non-Abelian topological order is a coveted state of matter with remarkable properties,
including quasiparticles that can remember the sequence in which they are exchanged …

Measurement as a shortcut to long-range entangled quantum matter

TC Lu, LA Lessa, IH Kim, TH Hsieh - PRX Quantum, 2022 - APS
The preparation of long-range entangled states using unitary circuits is limited by Lieb-
Robinson bounds, but circuits with projective measurements and feedback (“adaptive …

Hierarchy of topological order from finite-depth unitaries, measurement, and feedforward

N Tantivasadakarn, A Vishwanath, R Verresen - PRX Quantum, 2023 - APS
Long-range entanglement—the backbone of topologically ordered states—cannot be
created in finite time using local unitary circuits, or, equivalently, adiabatic state preparation …

Long-range entanglement from measuring symmetry-protected topological phases

N Tantivasadakarn, R Thorngren, A Vishwanath… - Physical Review X, 2024 - APS
A fundamental distinction between many-body quantum states are those with short-and long-
range entanglement (SRE and LRE). The latter cannot be created by finite-depth circuits …

Average symmetry-protected topological phases

R Ma, C Wang - Physical Review X, 2023 - APS
Symmetry-protected topological (SPT) phases are many-body quantum states that are
topologically nontrivial as long as the relevant symmetries are unbroken. In this work we …

Mixed-state long-range order and criticality from measurement and feedback

TC Lu, Z Zhang, S Vijay, TH Hsieh - PRX Quantum, 2023 - APS
We propose a general framework for using local measurements, local unitaries, and
nonlocal classical communication to construct quantum channels, which can efficiently …

Entanglement and charge-sharpening transitions in U (1) symmetric monitored quantum circuits

U Agrawal, A Zabalo, K Chen, JH Wilson, AC Potter… - Physical Review X, 2022 - APS
Monitored quantum circuits can exhibit an entanglement transition as a function of the rate of
measurements, stemming from the competition between scrambling unitary dynamics and …

Fermionic symmetry protected topological phases and cobordisms

A Kapustin, R Thorngren, A Turzillo, Z Wang - Journal of High Energy …, 2015 - Springer
A bstract It has been proposed recently that interacting Symmetry Protected Topological
Phases can be classified using cobordism theory. We test this proposal in the case of …