Interaction of edge exciton polaritons with engineered defects in the hyperbolic material Bi2Se3

Abstract

Hyperbolic materials have unique optical properties such as negative refraction and highly directional polaritons, relevant in super-resolution imaging. Here, the topological insulator Bi2Se3 is shown to host hyperbolic edge-confined exciton polaritons that can be steered via engineered edge defects.