Related Experiment Video
Updated: Aug 27, 2026

Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Sculpting non-Hermitian light in the continuum
Xin Zhang1, Zi-Lan Deng2, Chaofan Zhang3
1Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, China.
Abstract:
PT- or anti-PT-symmetric non-Hermitian photonic systems can exhibit responses such as phase transitions, slow light, and asymmetric modal evolution near an exceptional point (EP), but realizing a phase-transition process that satisfies anti-PT symmetry and passes through an EP on an integrated platform remains challenging. A smart research from Xiankai Sun's group at the Chinese University of Hong Kong (CUHK) recently demonstrated that two quasi-BIC modes generate dissipative coupling to the same radiative continuum, enabling anti-PT phase transitions and EPs on a silicon-based integrated photonic platform without additional lossy materials or auxiliary lossy waveguides. This provides a new physical framework for exploring the intersection of BIC photonics and non-Hermitian photonics.
Related Concept Videos
Gauss's Law: Planar Symmetry
Symmetry in Maxwell's Equations
Plastic Deformations of Members with a Single Plane of Symmetry
Tangent Planes to Surfaces
Divergence Theorem in 3D Space
Gauss's Law: Spherical Symmetry

