Direct- and Inverse-design for non-Hermitian smart light management

Abstract

We present direct and inverse-design strategies to achieve ‘on demand’ dynamical manipulation of light by non-Hermitian potentials. The direct approach, based on a generalized Hilbert Transform, widens the concept of the Kramers Kronig relations in space. Yet, the inverse-design concept enables analyzing the underlying fundamental insights of the resulting permittivity distributions, bridging the gap between direct and inverse-design approaches to engineer non-Hermitian optical systems. Our findings may have to applications encompassing laser science.