Recently, the Nanophotonics and Metamaterials International Joint Research Center (Super Nano Center) of the School of Physics and Optoelectronic Engineering of our university, in collaboration with international teams from Saint Petersburg State University of Information Technologies, Mechanics and Optics (Russia) and the Australian National University, has made significant progress in the field of non-Hermitian photonics and Mie resonance control. The research team, through the precise design of subwavelength dielectric resonator structures, has experimentally revealed for the first time the dynamic conversion law between the non-Hermitian exceptional point (EP) and the Hermitian degenerate point (DP) in the scattering spectrum, providing a new theoretical framework for the development of high-sensitivity sensors, electromagnetic stealth technology, multi-physical field energy control technology, and nonlinear optical devices. The relevant results were published in the international top journal Science Advances on February 21 under the title "Non-Hermitian Singularities in Mie Resonators," with our university being the first completing unit.

Schematic Diagram of Annular Dielectric Resonator Structure and

Singularities and Degeneracies in Its Scattering Spectrum