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説明:

We derive in the present work topological photonic states purely based on conventional dielectric material by deforming a honeycomb lattice of cylinders into a triangular lattice of cylinder hexagons. The photonic topology is associated with a pseudo-time-reversal (TR) symmetry constituted by the TR symmetry supported in general by Maxwell equations and the C6 crystal symmetry upon design, which renders the Kramers doubling in the present photonic system. It is shown explicitly for the transverse magnetic mode that the role of pseudospin is played by the angular momentum of the wave function of the out-of-plane electric field. We solve Maxwell equations and demonstrate the new photonic topology by revealing pseudospin-resolved Berry curvatures of photonic bands and helical edge states characterized by Poynting vectors.

権利情報:

• In Copyright
  

キーワード: topological insulator, semiconductor photonic crystal, quantum spin Hall effect

刊行年月日: 2015-06-03

出版者: American Physical Society (APS)

掲載誌:

• Physical Review Letters (ISSN: 10797114) vol. 114 issue. 22 223901

研究助成金:

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1103/physrevlett.114.223901

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更新時刻: 2024-01-05 22:12:35 +0900

MDRでの公開時刻: 2023-04-27 14:37:11 +0900