Journal
PHYSICAL REVIEW RESEARCH
Volume 4, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.4.013185
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Funding
- Millennium Science Initiative Program [ICN17_012]
- FONDECYT [1191205, 3190601, 1211038]
- European Research Council grant EmergenTopo [865151]
- H2020-FETFLAG project PhoQus [820392]
- QUANTERA project Interpol [ANR-QUAN-0003-05]
- French government through the Programme Investissement, d'Avenir [I-SITE ULNE/ANR-16-IDEX-0004 ULNE]
- Labex CEMPI [ANR-11-LABX-0007]
- CPER Photonics for Society P4S
- European Research Council (ERC) [865151] Funding Source: European Research Council (ERC)
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In this study, unconventional edge states are revealed in a one-dimensional lattice, which can be controlled in terms of energy and location by manipulating the lattice termination. These edge states exhibit remarkable stability and offer new possibilities for one-dimensional lattice engineering.
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.
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