2 papers
physics.optics2025
Ultrasensitive Higher-Order Exceptional Points via Non-Hermitian Zero-Index Materials
Dongyang Yan, Alexander S. Shalin, Yongxing Wang +6
Higher-order exceptional points (EPs) in optical structures enable ultra-sensitive responses to perturbations. However, previous investigations on higher-order EPs have predominant…
physics.optics2025
Electromagnetic Duality Symmetry-Protected Dirac-Like Cones
Muxuan Yang, Dongyang Yan, Lei Gao +5
Dirac-like cones, featuring conical linear dispersions intersecting with flat bands, typically arise from accidental degeneracy of multiple modes that requires precise tuning of ma…