1 citations · 1 across the 3 of their papers we have counts for
4 papers
Global Framework for Dynamics and Criticality of Bound States in the Continuum
Keren Wang, Lujun Huang, Wei Wang
Bound states in the continuum (BICs) exhibit rich momentum-space dynamics, including merging, annihilation, and reconnection across symmetry directions and bands. Yet these phenome…
Unified Topological Dynamics of Merging Bound States in the Continuum for High-Order Topological Charges
Keren Wang, Lujun Huang, Wei Wang
Bound states in the continuum (BICs) are polarization singularities in momentum space whose topological charges (TCs) govern advanced light-matter interactions. While lattice symme…
Broadband-operational orbital angular momentum generation in nonlocal metasurfaces with maximum efficiency approaching 80%
Keren Wang, Kaili Sun, Jing Du +5
Nonlocal metasurfaces provide a compact route to generating momentum-space optical vortices but are limited by steep dispersion typically associated with high-quality (Q) factor re…
Anomalous Spontaneous Emission Enhancement by Non-Hermitian Momentum-Space Bound States in the Continuum
Keren Wang, Jing Du, Wei Wang
Conventional Purcell theory emphasizes high quality factors (Q) for spontaneous emission (SE) enhancement in cavities, but overlooks collective Bloch mode effects in periodic nanos…