Fermionic time-reversal symmetry in a photonic topological insulator

• Published in: Nature materials Vol. 19; no. 8; pp. 855 - 860
• Main Authors: Maczewsky, Lukas J, Höckendorf, Bastian, Kremer, Mark, Biesenthal, Tobias, Heinrich, Matthias, Alvermann, Andreas, Fehske, Holger, Szameit, Alexander
• Format: Journal Article
• Language: English
• Published: England Nature Publishing Group 01.08.2020
• Subjects: Acoustics; Cold atoms; Photonics; Polarization (spin alignment); Symmetry; Topological insulators; Topology; Wave propagation; Waveguides

Much of the recent attention directed towards topological insulators is motivated by their hallmark feature of protected chiral edge states. In electronic (or fermionic) topological insulators, these states originate from time-reversal symmetry and allow carriers with opposite spin-polarization to p...