Type-I hyperbolic metasurfaces for highly-squeezed designer polaritons with negative group velocity

Abstract

Hyperbolic polaritons provide unprecedented control over light-matter interaction at extreme nanoscales. Here, the authors propose type-I hyperbolic metasurfaces supporting highly-squeezed magnetic designer polaritons with negative group velocity, which are magnetic analogs of hyperbolic polaritons in hexagonal boron nitride.