Fig. 5: Wavelength dependence of the coupled edge.
From: Topological state engineering via supersymmetric transformations
a Experimentally observed output intensities for different wavelengths obtained by exciting the topological edge state of the coupled lattice, indicated with the red dot in b. b Schematic representation of the Su-Schrieffer-Heeger (SSH) lattice weakly coupled to the superpartner SP1 lattice. The relation between the wavelength used and its intensity measured at the output is represented in the inset. The total length of the sample is L = 10 cm, the wavelength range used to excite the waveguides is 500 nm ≤ λ ≤ 720 nm and the lattice is composed of N = 99 waveguides.
