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Crystalline metamaterials for topological properties at subwavelength scales

Yves, Simon, Fleury, Romain, Berthelot, Thomas, Fink, Mathias, Lemoult, Fabrice, Lerosey, Geoffroy·2017·Nature Communications
DOI 10.1038/ncomms16023PMC PMC5520060
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Abstract

The exciting discovery of topological condensed matter systems has lately triggered a search for their photonic analogues, motivated by the possibility of robust backscattering-immune light transport. However, topological photonic phases have so far only been observed in photonic crystals and waveguide arrays, which are inherently physically wavelength scaled, hindering their application in compact subwavelength systems. In this letter, we tackle this problem by patterning the deep subwavelength resonant elements of metamaterials onto specific lattices, and create crystalline metamaterials that can develop complex nonlocal properties due to multiple scattering, despite their very subwavelength spatial scale that usually implies to disregard their structure. These spatially dispersive systems can support subwavelength topological phases, as we demonstrate at microwaves by direct field mapping. Our approach gives a straightforward tabletop platform for the study of photonic topological phases, and allows to envision applications benefiting the compactness of metamaterials and the amazing potential of topological insulators.

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Metadata

Authors
Yves, S., Fleury, R., Berthelot, T., Fink, M., Lemoult, F., & Lerosey, G.
ORCID
Lerosey, Geoffroy
Venue
Nature Communications
Publisher
Springer Science and Business Media LLC
Published
2017-07-18
Volume
8
Issue
1
ISSN
2041-1723
DOI
10.1038/ncomms16023
PMC
PMC5520060
Cited by
230
References
8
Language
en
Licence

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