• 文献标题:   Observation of localized ground and excited orbitals in graphene photonic ribbons
  • 文献类型:   Article
  • 作  者:   CANTILLANO C, MUKHERJEE S, MORALESINOSTROZA L, REAL B, CACERESARAVENA G, HERMANNAVIGLIANO C, THOMSON RR, VICENCIO RA
  • 作者关键词:   waveguide lattice, periodic structure, flatband, orbital excitation
  • 出版物名称:   NEW JOURNAL OF PHYSICS
  • ISSN:   1367-2630
  • 通讯作者地址:   Univ Chile
  • 被引频次:   7
  • DOI:   10.1088/1367-2630/aab483
  • 出版年:   2018

▎ 摘  要

We report on the experimental realization of a quasi-one-dimensional photonic graphene ribbon supporting four flat-bands (FBs). We study the dynamics of fundamental and dipolar modes, which are analogous to the s and p orbitals, respectively. In the experiment, both modes (orbitals) are effectively decoupled from each other, implying two sets of six bands, where two of them are completely flat (dispersionless). Using an image generator setup, we excite the s and p FB modes and demonstrate their non-diffracting propagation for the first time. Our results open an exciting route towards photonic emulation of higher orbital dynamics.