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physics.optics2026
Mirror-Symmetry-Enforced Photonic Altermagnet
Chong Cao, Xiong-Xiong Xue, Yee Sin Ang +1
Altermagnets host momentum-dependent spin splitting without net magnetization, a symmetry-enforced band phenomenon whose photonic analogues have so far been realized only in square…
physics.optics2026
Tunable high- Janus-to-chiral bound states in the continuum in bilayer PhCs
Zhexing Dong, Shengxuan Xia, Yee Sin Ang +1
We propose a bilayer all-dielectric PhC for controlling Janus bound states in the continuum (BIC) and optical chirality through symmetry-selective perturbations. Starting from a sy…