Nature Communications (Nov 2017)

Direct observation of valley-polarized topological edge states in designer surface plasmon crystals

  • Xiaoxiao Wu,
  • Yan Meng,
  • Jingxuan Tian,
  • Yingzhou Huang,
  • Hong Xiang,
  • Dezhuan Han,
  • Weijia Wen

DOI
https://doi.org/10.1038/s41467-017-01515-2
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 9

Abstract

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The photonic valley-Hall effect can enable the unidirectional propagation of edge states, but often require covers which shield the states from direct measurement. Here, Wu et al. realize photonic valley-Hall effect using designer surface plasmons, enabling the direct observation of topological states.