3 papers
physics.optics2026
Unveiling spin-orbital angular momentum locking in photonic Dirac vortex cavities
Haitao Li, Jiusi Yu, Jiayu Fan +6
Dirac vortices, originally studied in quantum field theories to predict localized zero-energy modes, were recently realized in photonics, leading to Dirac vortex cavities. With top…
physics.optics2025
Giant and Rapidly Switching Intrinsic Chirality Enabled by Toroidal Quasi-Bound States in the Continuum
Shijie Kang, Jiusi Yu, Boyuan Ge +8
Circular dichroism (CD), arising from spin-selective light-matter interactions controlled by chirality, is critical for advanced applications such as chiral imaging and ultrasensit…
physics.optics2025
Direct Observation of Strongly Tilted Dirac Points at General Positions in the Reciprocal Space
Yangsong Ye, Shijie Kang, Jiusi Yu +7
Type-II Dirac points (DPs), which occur at the intersection of strongly tilted and touching energy bands, exhibit many intriguing physical phenomena fundamentally different from th…