Spectral singularities are zero-width resonances associated to real-frequency poles in the scattering operator, which can occur in non-Hermitian structures characterized by suitable spatial distributions of gain and loss. Here, we study this phenomenon in connection with cylindrical structures, and address its exploitation for the tailoring and control of the scattering response.
Spectral singularities in non-hermitian cylindrical geometries
Moccia M.;Castaldi G.;Galdi V.
2019-01-01
Abstract
Spectral singularities are zero-width resonances associated to real-frequency poles in the scattering operator, which can occur in non-Hermitian structures characterized by suitable spatial distributions of gain and loss. Here, we study this phenomenon in connection with cylindrical structures, and address its exploitation for the tailoring and control of the scattering response.File in questo prodotto:
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