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