Non-Hermitian Singularities in Scattering Spectra of Mie Resonators

Autor:	Zhang, Fan, Solodovchenko, Nikolay S., Fan, Hangkai, Limonov, Mikhail F., Song, Mingzhao, Kivshar, Yuri S., Bogdanov, Andrey A.
Rok vydání:	2024
Předmět:	Physics - Classical Physics Physics - Optics
Druh dokumentu:	Working Paper
Popis:	Non-Hermitian systems are known to possess unique singularities in the scattering spectra such as exceptional points, bound states in the continuum, Diabolic points, and anapole states, which are usually considered to be independent. Here, we demonstrate the fundamental relationships between non-Hermitian singularities and observe them experimentally in the scattering spectra. We reveal that exceptional points appear in the anapole regime, and diabolic points are associated with superscattering. We confirm our findings with microwave experiments by measuring the scattering spectra of subwavelength Mie-resonant ceramic rings. Our study underpins the generic behavior of non-Hermitian singularities in the scattering spectra of subwavelength resonators, uncovering their novel applications in non-Hermitian nonlinear optics and topological photonics. Comment: 19 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2408.06388 Zobrazit plný text záznamu View this record from Arxiv