Non-Hermitian dynamical topological winding in photonic mesh lattices
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arXiv
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866913785212567552 |
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| author | Longhi, Stefano |
| author_facet | Longhi, Stefano |
| contents | Topological winding in non-Hermitian systems are generally associated to the Bloch band properties of lattice Hamiltonians. However, in certain non-Hermitian models topological winding naturally arise from the dynamical evolution of the system and related to a new form of geometric phase. Here we investigate dynamical topological winding in non-Hermitian photonic mesh lattices, where the mean survival time of an optical pulse circulating in coupled fiber loops is quantized and robust against Hamiltonian deformations. The suggested photonic model could provide an experimentally accessible platform for the observation of non-Hermitian dynamical topological windings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_01520 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Non-Hermitian dynamical topological winding in photonic mesh lattices Longhi, Stefano Optics Disordered Systems and Neural Networks Quantum Physics Topological winding in non-Hermitian systems are generally associated to the Bloch band properties of lattice Hamiltonians. However, in certain non-Hermitian models topological winding naturally arise from the dynamical evolution of the system and related to a new form of geometric phase. Here we investigate dynamical topological winding in non-Hermitian photonic mesh lattices, where the mean survival time of an optical pulse circulating in coupled fiber loops is quantized and robust against Hamiltonian deformations. The suggested photonic model could provide an experimentally accessible platform for the observation of non-Hermitian dynamical topological windings. |
| title | Non-Hermitian dynamical topological winding in photonic mesh lattices |
| topic | Optics Disordered Systems and Neural Networks Quantum Physics |
| url | https://arxiv.org/abs/2407.01520 |