Observation of multi-orbital Fano resonances in photonic lattices
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866908485212438528 |
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| author | Guzmán-Silva, Diego Ahumada, Maritza Parra-Palavecino, Polette Legón, Alexis R. Orellana, Pedro A. Vicencio, Rodrigo A. |
| author_facet | Guzmán-Silva, Diego Ahumada, Maritza Parra-Palavecino, Polette Legón, Alexis R. Orellana, Pedro A. Vicencio, Rodrigo A. |
| contents | Fano resonances are a fundamental physical phenomenon that occurs when an open channel couples with a closed one, resulting in a resonant cancellation of transmission. In this article, we introduce a quantum simulator designed to observe multi-orbital Fano resonances using a photonic waveguide analog. The system consists of a homogeneous lattice, which includes a plane wave generator, and an atom-like impurity that supports first-order (S) and second-order (P) modes. We derive a two-impurity Fano-Anderson model to describe this system and fit the experimental results accordingly, demonstrating a remarkable agreement between our experimental measurements and theoretical predictions. A comprehensive experimental characterization reveals clear double resonances for the S and P states, which depend on the properties of the atom and the excitation wavelength. Our results illustrate how the transport of a propagating beam on a lattice can be effectively controlled by simply adjusting the properties of a single external atom-like impurity, which works as an efficient energy valve. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_08534 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Observation of multi-orbital Fano resonances in photonic lattices Guzmán-Silva, Diego Ahumada, Maritza Parra-Palavecino, Polette Legón, Alexis R. Orellana, Pedro A. Vicencio, Rodrigo A. Optics Fano resonances are a fundamental physical phenomenon that occurs when an open channel couples with a closed one, resulting in a resonant cancellation of transmission. In this article, we introduce a quantum simulator designed to observe multi-orbital Fano resonances using a photonic waveguide analog. The system consists of a homogeneous lattice, which includes a plane wave generator, and an atom-like impurity that supports first-order (S) and second-order (P) modes. We derive a two-impurity Fano-Anderson model to describe this system and fit the experimental results accordingly, demonstrating a remarkable agreement between our experimental measurements and theoretical predictions. A comprehensive experimental characterization reveals clear double resonances for the S and P states, which depend on the properties of the atom and the excitation wavelength. Our results illustrate how the transport of a propagating beam on a lattice can be effectively controlled by simply adjusting the properties of a single external atom-like impurity, which works as an efficient energy valve. |
| title | Observation of multi-orbital Fano resonances in photonic lattices |
| topic | Optics |
| url | https://arxiv.org/abs/2508.08534 |