Nonlinear second-order photonic topological insulators

Kirsch, MS; Zhang, YQ; Kremer, M; Maczewsky, LJ; Ivanov, SK; Kartashov, YV; Torner, L; Bauer, D; Szameit, A; Heinrich, M

Szameit, A (corresponding author), Univ Rostock, Inst Phys, Rostock, Germany.

NATURE PHYSICS, 2021; 17 (9): 995