講演情報
[10p-C310-7]Exceptional-point-induced chiral quadrupole modes in H1 photonic crystal nanocavities
〇Ruoxi Zhao1, Guangtai Lu1, Satoshi Iwamoto1,2 (1.RCAST Univ. Tokyo, 2.IIS Univ. Tokyo)
キーワード：
exceptional points、orbital angular momentum、quadrupole modes
Exceptional points (EPs), where eigenstates coalesce in non-Hermitian systems, have attracted considerable attention for engineering chiral photonic states. EPs formed by quadrupole modes can uniquely support rotating states carrying higher-order orbital angular momentum (OAM), which remains unexplored. Here, we demonstrate the EPs arising from two quadrupole modes in an H1 PhC nanocavity through 2D finite-element simulations. Near the two EPs, the chiral behavior emerges, and the handedness switches between them.