Conference on Lasers and Electro-Optics | 2021
Nonlinearity-induced transition of topological corner states
Abstract
We investigate nonlinear effects on corner modes in a two-dimensional Su-Schrieffer-Heeger-type photonic platform. Nonlinearity induces transition between corner and edge states in topologically nontrivial lattices, in contrast to facilitating bulk modes in the trivial counterparts.