Experimental observation of edge states in SSH-Stub photonic lattices

Autor: Gabriel Cáceres-Aravena, Bastián Real, Diego Guzmán-Silva, Alberto Amo, Luis E. F. Foa Torres, Rodrigo A. Vicencio
Přispěvatelé: Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), ANR-16-IDEX-0004,ULNE,ULNE(2016)
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Physical Review Research
Physical Review Research, 2022, 4 (1), pp.013185. ⟨10.1103/PhysRevResearch.4.013185⟩
Phys. Rev. Res.
ISSN: 2643-1564
DOI: 10.1103/PhysRevResearch.4.013185⟩
Popis: We reveal unconventional edge states in a one-dimensional Stub lattice of coupled waveguides with staggered hoppings. The edge states appear for the same values of hoppings as topological edge states in the Su-Schrieffer-Heeger model. They have different energies depending on the lattice termination and present a remarkable robustness against certain types of disorder. We evidence experimentally the phase transition at which these edge states appear, opening the door to the engineering of one-dimensional lattices with localized edge modes whose energy and location can be controlled at will.
Databáze: OpenAIRE