Observation of nonlinear fractal higher order topological insulator

H. Zhong, V. O. Kompanets, et al.

Explore the groundbreaking realm of nonlinear photonic higher-order topological insulators! This exciting research, conducted by Hua Zhong, Victor O. Kompanets, Yiqi Zhang, Yaroslav V. Kartashov, Meng Cao, Yongdong Li, and others, unveils a fractal HOTI using Sierpiński gasket waveguide arrays that supports topological corner states and thresholdless spatial solitons. Discover how this innovation opens new avenues for controlling light flow through fractal materials.... show more

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