dc.contributor.authorGao, Fei
dc.contributor.authorGao, Zhen
dc.contributor.authorShi, Xihang
dc.contributor.authorYang, Zhaoju
dc.contributor.authorLin, Xiao
dc.contributor.authorXu, Hongyi
dc.contributor.authorJoannopoulos, John D.
dc.contributor.authorSoljačić, Marin
dc.contributor.authorChen, Hongsheng
dc.contributor.authorLu, Ling
dc.contributor.authorChong, Yidong
dc.contributor.authorZhang, Baile
dc.identifier.citationGao, F., Gao, Z., Shi, X., Yang, Z., Lin, X., Xu, H., et al. (2016). Probing topological protection using a designer surface plasmon structure. Nature Communications, 7, 11619-.en_US
dc.description.abstractTopological photonic states, inspired by robust chiral edge states in topological insulators, have recently been demonstrated in a few photonic systems, including an array of coupled on-chip ring resonators at communication wavelengths. However, the intrinsic difference between electrons and photons determines that the ‘topological protection’ in time-reversal-invariant photonic systems does not share the same robustness as its counterpart in electronic topological insulators. Here in a designer surface plasmon platform consisting of tunable metallic sub-wavelength structures, we construct photonic topological edge states and probe their robustness against a variety of defect classes, including some common time-reversal-invariant photonic defects that can break the topological protection, but do not exist in electronic topological insulators. This is also an experimental realization of anomalous Floquet topological edge states, whose topological phase cannot be predicted by the usual Chern number topological invariants.en_US
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en_US
dc.description.sponsorshipMOE (Min. of Education, S’pore)en_US
dc.format.extent9 p.en_US
dc.relation.ispartofseriesNature Communicationsen_US
dc.rights© 2016 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/en_US
dc.subjectElectronic Properties and Materialsen_US
dc.subjectOptical Physicsen_US
dc.titleProbing topological protection using a designer surface plasmon structureen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.versionPublished versionen_US

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