Observation of an unpaired photonic Dirac point

Observing the photonic analogue of an unpaired Dirac point is hard, as it requires breaking the time-reversal symmetry. Here, the authors use gyromagnetic materials to do that, and thus succeed in observing an unpaired Dirac point in a planar photonic crystal operating at microwave frequencies.

Bibliographic Details
Main Authors: Gui-Geng Liu, Peiheng Zhou, Yihao Yang, Haoran Xue, Xin Ren, Xiao Lin, Hong-xiang Sun, Lei Bi, Yidong Chong, Baile Zhang
Format: Article
Language:English
Published: Nature Publishing Group 2020-04-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-020-15801-z