Bound states in the continuum (BICs) are waves that remain localized even though they
coexist with a continuous spectrum of radiating waves that can carry energy away. Their very …

The low performance of sensors based on an all-dielectric metasurface limits their
application compared to metallic counterparts. Here, for the first time, an all-dielectric BIC …

Transport of quantum or classical waves in open systems is known to be strongly affected by
non-Hermitian terms that arise from an effective description of system-environment …

We consider a discrete time evolution of light in dissipative and disordered photonic lattice
presenting a generalization of two popular non-Hermitian models in mathematical literature …

We study the Jost solutions for the scattering problem of a von Neumann-Wigner type
potential, constructed by means of a two times iterated and completely degenerated …

This thesis incorporates the concept of light propagation in non-Hermitian media. We use
the waveguide arrays and one dimensional photonic crystals as the frameworks for our …