Author:
Hu Zhichan,Bongiovanni Domenico,Wang Ziteng,Wang Xiangdong,Song Limin,Song Daohong,Hu Yi,Morandotti Roberto,Buljan Hrvoje,Chen Zhigang
Abstract
We report the first experimental realization of topological guidance of optical vortices by disclination in a photonic topological crystalline insulator. Both singly- and doubly-charged vortex beams remain robust during propagation, manifesting protected zero-energy modes.