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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…
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…
Exceptional points in non-Hermitian Photonics: Applications and Recent Developments
Haiyu Meng, Yee Sin Ang, Ching Hua Lee
Exceptional points are complex branching singularities of non-Hermitian bands that have lately attracted considerable interest, particularly in non-Hermitian photonics. In this art…
Efficient generation of extreme terahertz harmonics in 3D Dirac semimetals
J. Lim, Y. S. Ang, F. J. G. de Abajó +3
Frequency multiplication of terahertz signals on a solid state platform is highly sought-after for the next generation of high-speed electronics and the creation of frequency combs…