2024
DOI: 10.5802/crphys.147
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Photonic topological Anderson insulator in a two-dimensional atomic lattice

Abstract: Disorder in atomic positions can induce a topologically nontrivial phase-topological Anderson insulator (TAI)-for transverse electric optical quasimodes of a two-dimensional honeycomb lattice of immobile atoms. TAI requires both time-reversal and inversion symmetries to be broken to similar extents. It is characterized by a nonzero topological invariant, a reduced density of states and spatially localized quasimodes in the bulk, as well as propagating edge states. A transition from TAI to the topological insul… Show more

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