2 papers
physics.optics2026
A Group-Theoretical Framework for Local k-Space Topology and Berry Phase in 2D Photonic Systems
Xinyi Yuan, Grazia Salerno
Two-dimensional photonic crystals (2D PhCs) enable fine-grained control over a broad set of Bloch modes without the constraints of band occupancy and natural crystal structures, an…
physics.optics2025
Breakdown of Bulk-Radiation Correspondence in Radiative Photonic Lattices
Xinyi Yuan, Loïc Malgrey, Helgi Sigurðsson +2
The topological characteristics of energy bands in crystalline systems are encapsulated in the Berry curvature of the bulk Bloch states. In photonic crystal slabs, far-field emissi…