2025-26 Student of the year: Swati Bhargava
Observation of Topological Flat-Band States in Photonic Lattices We report the observation of topological flat-band states in photonic lattices fabricated using femtosecond laser writing. Topological photonic lattices are optical structures that remain insulating in the bulk while supporting robust, unidirectional edge states immune to backscattering. By embedding a flat-band within the topological bandgap, we introduce…