Download file (1.86 MB)
Download as zip (1.73 MB)

Collection

Citation

Description:

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.

Rights:

• In Copyright
  

Keyword: topological insulator, semiconductor photonic crystal, quantum spin Hall effect

Date published: 2015-06-03

Publisher: American Physical Society (APS)

Journal:

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

Funding:

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1103/physrevlett.114.223901

Related item:

Other identifier(s):

Contact agent:

Updated at: 2024-01-05 22:12:35 +0900

Published on MDR: 2023-04-27 14:37:11 +0900