Observation of photonic anomalous Floquet topological insulators

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.

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Bibliographic Details
Main Authors: Lukas J. Maczewsky, Julia M. Zeuner, Stefan Nolte, Alexander Szameit
Format: article
Language:EN
Published: Nature Portfolio 2017
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Online Access:https://doaj.org/article/5a338a40b9c444e19c5aa57ea1735526
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Summary: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.