3 papers
cond-mat.mes-hall2026
Exceptional-Point Geometry of Weak Topological Boundary States
Rafael A. Molina, Kevin González, Pedro A. Orellana
In this article, we demonstrate that weak topology can be formulated geometrically in terms of exceptional singularities of an analytically continued Bloch Hamiltonian. A general p…
quant-ph2026
Topological states and flat bands induced by bound states in the continuum in a ladder-shaped one-dimensional photonic crystal
SofÃa Pinto, P. A. Orellana, Sergio Bravo
One-dimensional crystals serve as a versatile platform for engineering nontrivial states, which can be easily explored in transport configurations. In this work, we analyze the pro…
physics.optics2025
Observation of multi-orbital Fano resonances in photonic lattices
Diego Guzmán-Silva, Maritza Ahumada, Polette Parra-Palavecino +3
Fano resonances are a fundamental physical phenomenon that occurs when an open channel couples with a closed one, resulting in a resonant cancellation of transmission. In this arti…