Exceptional Points in Flat Optics: A Non-Hermitian Line-Wave Scenario

  title={Exceptional Points in Flat Optics: A Non-Hermitian Line-Wave Scenario},
  author={Massimo Moccia and Giuseppe Castaldi and Francesco Monticone and Vincenzo Galdi},
Line waves are recently discovered wave entities that are localized along two directions and therefore can be viewed as the one-dimensional counterpart of surface waves. These waves can be supported at discontinuities of the surface reactance and/or resistance of low-dimensional materials such as metasurfaces or graphene. Here, a broader class of non-Hermitian surface-impedance junctions is studied that can support coupled line waves and that allows the investigation of different one… Expand


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