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Measurement of the Zak phase of photonic bands through the interface states of a metasurface/photonic crystal

  • 发布时间:2020-05-16
  • 点击次数:
  • 发表刊物:Physical Review B
  • 摘要:The Zak phase labels the topological property of one-dimensional Bloch bands. Here we propose a scheme and experimentally measure the Zak phase in a photonic system. The Zak phase of a bulk band is related to the topological properties of the two band gaps sandwiching this band, which in turn can be inferred from the existence or absence of an interface state. Using a reflection spectrum measurement, we determined the existence of interface states in the gaps and then obtained the Zak phases. The knowledge of Zak phases can also help us predict the existence of interface states between a …
  • 论文类型:期刊论文
  • 卷号:93
  • 期号:4
  • 页面范围:041415
  • 是否译文:
  • 发表时间:2016

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