Non-Exponential Decay in Finite Photonic Waveguide Arrays
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arXiv
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| Format: | Preprint |
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2025
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| author | Huber, Florian H. Braumandl, Benedikt Knörzer, Johannes Himmel, Jonas Versmold, Carlotta Jonsson, Robert H. Szameit, Alexander Meinecke, Jasmin |
| author_facet | Huber, Florian H. Braumandl, Benedikt Knörzer, Johannes Himmel, Jonas Versmold, Carlotta Jonsson, Robert H. Szameit, Alexander Meinecke, Jasmin |
| contents | Open quantum-system dynamics can follow exponential decay, non-exponential relaxation, or oscillatory dynamics, depending on the system-environment coupling. We study a lattice with a boundary defect that transitions between these regimes, controlled by a single parameter. Extending the exact solution to the oscillatory case, we establish a unified theory confirmed by experiments in integrated waveguide arrays. We characterize finite-size effects by comparing analytics, numerics, and data. This provides a benchmark for emulating infinite systems and studying open systems in photonic lattices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_06443 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Non-Exponential Decay in Finite Photonic Waveguide Arrays Huber, Florian H. Braumandl, Benedikt Knörzer, Johannes Himmel, Jonas Versmold, Carlotta Jonsson, Robert H. Szameit, Alexander Meinecke, Jasmin Quantum Physics Optics Open quantum-system dynamics can follow exponential decay, non-exponential relaxation, or oscillatory dynamics, depending on the system-environment coupling. We study a lattice with a boundary defect that transitions between these regimes, controlled by a single parameter. Extending the exact solution to the oscillatory case, we establish a unified theory confirmed by experiments in integrated waveguide arrays. We characterize finite-size effects by comparing analytics, numerics, and data. This provides a benchmark for emulating infinite systems and studying open systems in photonic lattices. |
| title | Non-Exponential Decay in Finite Photonic Waveguide Arrays |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2509.06443 |