Phases and phase gates

11 AM, 5 Feb 2026

Alison Warman explains how Symmetry Topological Field Theory classifies quantum phases and informs advances in quantum information research.

Symmetry Topological Field Theory (SymTFT) enables the systematic exploration of quantum systems with generalised symmetries. Alison Warman outlines the framework of the theory and and its application to phases of matter, including gapped phases where symmetry-broken vacua carry distinct forms of topological order. She also shows how SymTFT techniques can be used to construct Clifford-hierarchy quantum computing phase gates in 2D.

Alison Warman is a PhD student at Oxford University, where her doctoral research is supervised by Prof. Sakura Schäfer-Nameki. Her work focuses on generalised symmetries in fundamental quantum systems, ranging from high energy physics to condensed matter and quantum computation.

Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates
Phases and phase gates