Topologically protected refraction of robust kink states in valley photonic crystals

• Main Authors: Gao, Fei, Xue, Haoran, Yang, Zhaoju, Lai, Kueifu, Yu, Yang, Lin, Xiao, Chong, Yidong, Shvets, Gennady, Zhang, Baile
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2019
• Subjects: Photonic Crystals; DRNTU::Science::Physics; Metamaterials
• Online Access: https://hdl.handle.net/10356/88937; http://hdl.handle.net/10220/48348
• Institution: Nanyang Technological University

Recently discovered1,2 valley photonic crystals (VPCs) mimic many of the unusual properties of two-dimensional (2D) gapped valleytronic materials3,4,5,6,7,8,9. Of the utmost interest to optical communications is their ability to support topologically protected chiral edge (kink) states3,4,5,6,7,8,9...