Observation of Vortex Reflection Phase Induced by Synthetic Weyl Points

ORAL

Abstract

We demonstrate that generalized Weyl points can exist in a parameter space and we report the first observation of such nodal points in one-dimensional photonic crystals in the optical range. The reflection phase inside the band gap of a truncated photonic crystal exhibits vortexes in the parameter space where the Weyl points are defined and they share the same topological charges as the Weyl points.

*National Key Projects for Basic Researches of China (Grants No. 2017YFA0205700 and No. 2017YFA0303700), and the National Natural Science Foundation of China (Grants No. 11690033, No. 61425018, No. 11621091, and No. 11374151).

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Presenters

  • Hui Liu

    • School of Physics, Nanjing University

Authors

  • Qiang Wang

    • School of Physics, Nanjing University

  • Meng Xiao

    • Stanford Univ - Ginzton Lab
    • Ginzton Lab, Stanford University
    • Department of Electrical Engineering, Stanford University

  • Hui Liu

    • School of Physics, Nanjing University

  • Shining Zhu

    • School of Physics, Nanjing University

  • Che-Ting Chan

    • Department of physics, Hong Kong Univ of Sci & Tech
    • Hong Kong Univ of Sci & Tech
    • Department of Physics and the Institute for Advanced Study, The Hong Kong University of Science and Technology