Non-Exponential Decay in Finite Photonic Waveguide Arrays

• URL: http://arxiv.org/abs/2509.06443v1
• Date: Mon, 08 Sep 2025 08:43:22 GMT
• Title: Non-Exponential Decay in Finite Photonic Waveguide Arrays
• Authors: Florian H. Huber, Benedikt Braumandl, Johannes Knörzer, Jonas Himmel, Carlotta Versmold, Robert H. Jonsson, Alexander Szameit, Jasmin Meinecke,
• Abstract summary: We study a lattice with a boundary defect that transitions between regimes controlled by a single parameter.<n>We establish a unified theory confirmed by experiments in integrated waveguide arrays.<n>This provides a benchmark for emulating infinite systems and studying open systems in photonic lattices.
• Score: 31.533307102463027
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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.

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