Nature Communications (Jan 2017)

Observation of photonic anomalous Floquet topological insulators

  • Lukas J. Maczewsky,
  • Julia M. Zeuner,
  • Stefan Nolte,
  • Alexander Szameit

DOI
https://doi.org/10.1038/ncomms13756
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 7

Abstract

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Vanishing Chern numbers usually mean that a system is topologically trivial, but this rule may be violated for periodically driven systems. Here, Maczewskyet al.report topologically protected edge modes in a periodically driven photonic lattice with all bands of zero Chern number.