4 papers
Exceptional point induced by hyperbolicity in an electrostatic spherical shell
Álvaro Buendía, Marcelo S. Barreiro, Nuno M. R. Peres
Exceptional points (EPs) are non--Hermitian degeneracies at which both eigenvalues and eigenvectors coalesce, usually engineered through balanced gain and loss or non--reciprocity.…
Coupled electric dipole model for a Su-Schrieffer-Heeger chain of optically resonant coreshell nanoparticles
Álvaro Buendía, Nuno M. R. Peres
Coreshell nanoparticles can combine optical features of different materials in a single nanostructure, which makes them interesting for many applications from biomedicine to energy…
Far-field radiation of bulk, edge and corner eigenmodes from a finite 2D Su-Schrieffer-Heeger plasmonic lattice
Álvaro Buendía, José Luis Pura, Vincenzo Giannini +1
Subwavelength arrays of plasmonic nanoparticles allow us to control the behaviour of light at the nanoscale. Here, we develop an eigenmode analysis, employing a coupled electromagn…
Exploiting oriented field projectors to open topological gaps in plasmonic nanoparticle arrays
Álvaro Buendía, José A. Sánchez-Gil, Vincenzo Giannini
In the last years there have been multiple proposals in nanophotonics to mimic topological condensed matter systems. However, nanoparticles have degrees of freedom that atoms lack…