Non-Hermitian Singularities in Scattering Spectra of Mie Resonators
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866910564600512512 |
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| author | Zhang, Fan Solodovchenko, Nikolay S. Fan, Hangkai Limonov, Mikhail F. Song, Mingzhao Kivshar, Yuri S. Bogdanov, Andrey A. |
| author_facet | Zhang, Fan Solodovchenko, Nikolay S. Fan, Hangkai Limonov, Mikhail F. Song, Mingzhao Kivshar, Yuri S. Bogdanov, Andrey A. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_06388 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Non-Hermitian Singularities in Scattering Spectra of Mie Resonators Zhang, Fan Solodovchenko, Nikolay S. Fan, Hangkai Limonov, Mikhail F. Song, Mingzhao Kivshar, Yuri S. Bogdanov, Andrey A. Classical Physics Optics 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. |
| title | Non-Hermitian Singularities in Scattering Spectra of Mie Resonators |
| topic | Classical Physics Optics |
| url | https://arxiv.org/abs/2408.06388 |