Quadrupole topological photonic crystals

Most higher order topological phases are realized by emulations of tight binding models. Extending these concepts to continuum theories requires the identification of invariants describing the bulk multipole order. Here the authors realize the analog of quadrupole order for a gyromagnetic photonic c...

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Main Authors: Li He, Zachariah Addison, Eugene J. Mele, Bo Zhen
Format: Article
Language:English
Published: Nature Portfolio 2020-06-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-020-16916-z
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author Li He
Zachariah Addison
Eugene J. Mele
Bo Zhen
author_facet Li He
Zachariah Addison
Eugene J. Mele
Bo Zhen
author_sort Li He
collection DOAJ
description Most higher order topological phases are realized by emulations of tight binding models. Extending these concepts to continuum theories requires the identification of invariants describing the bulk multipole order. Here the authors realize the analog of quadrupole order for a gyromagnetic photonic crystal.
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spelling doaj.art-71fff96789e54733839f793e9a48531f2022-12-21T21:27:15ZengNature PortfolioNature Communications2041-17232020-06-011111610.1038/s41467-020-16916-zQuadrupole topological photonic crystalsLi He0Zachariah Addison1Eugene J. Mele2Bo Zhen3Department of Physics and Astronomy, University of PennsylvaniaDepartment of Physics and Astronomy, University of PennsylvaniaDepartment of Physics and Astronomy, University of PennsylvaniaDepartment of Physics and Astronomy, University of PennsylvaniaMost higher order topological phases are realized by emulations of tight binding models. Extending these concepts to continuum theories requires the identification of invariants describing the bulk multipole order. Here the authors realize the analog of quadrupole order for a gyromagnetic photonic crystal.https://doi.org/10.1038/s41467-020-16916-z
spellingShingle Li He
Zachariah Addison
Eugene J. Mele
Bo Zhen
Quadrupole topological photonic crystals
Nature Communications
title Quadrupole topological photonic crystals
title_full Quadrupole topological photonic crystals
title_fullStr Quadrupole topological photonic crystals
title_full_unstemmed Quadrupole topological photonic crystals
title_short Quadrupole topological photonic crystals
title_sort quadrupole topological photonic crystals
url https://doi.org/10.1038/s41467-020-16916-z
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AT zachariahaddison quadrupoletopologicalphotoniccrystals
AT eugenejmele quadrupoletopologicalphotoniccrystals
AT bozhen quadrupoletopologicalphotoniccrystals