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Topological Anderson phase in quasi-periodic waveguide lattices

AuthorsLonghi, Stefano
Issue Date15-Jul-2020
PublisherOptical Society of America
CitationOptics Letters 45(14): 4036-4039 (2020)
AbstractThe topological trivial band of a lattice can be driven into a topological phase by disorder in the system. This so-called topological Anderson phase has been predicted and observed for uncorrelated static disorder, while in the presence of correlated disorder, conflicting results are found. Here we consider a Su–Schrieffer–Heeger waveguide lattice in the trivial topological phase and show that quasi-periodic disorder in the coupling constants can drive the lattice into a topological nontrivial phase. A method to detect the emergence of the topological Anderson phase, based on light dynamics at the edge of a quasi-periodic waveguide lattice, is suggested.
Publisher version (URL)https://doi.org/10.1364/OL.399742
Appears in Collections:(IFISC) Artículos
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