| Issue |
EPJ Web Conf.
Volume 335, 2025
EOS Annual Meeting (EOSAM 2025)
|
|
|---|---|---|
| Article Number | 06008 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting - Nonlinear and Quantum Optics | |
| DOI | https://doi.org/10.1051/epjconf/202533506008 | |
| Published online | 22 September 2025 | |
https://doi.org/10.1051/epjconf/202533506008
Phase synchronization dynamics of a mutually coupled laser system for quantum random number generation
1 Quside Technologies S.L., Carrer d’Esteve Terradas 1, Oficina 304, 08860 Castelldefels, Spain
2 Departament de Física, Universitat Politècnica de Catalunya, Edifici GAIA, Rambla Sant Nebridi 22, 08222 Terrassa, Spain
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Published online: 22 September 2025
Abstract
We performed an experimental and numerical study of an Indium Phosphide photonic integrated circuit designed for quantum random number generation. We investigated the dynamics of two weakly mutually coupled semiconductor lasers and the transient evolution towards the synchronization of the lasers’ optical phases. The simulated dynamics with the experimentally adjusted parameters were found to be in qualitatively good agreement with the experimental time traces. The results provide a better understanding of the evolution towards synchronization and a foundation for the optimization of the photonic quantum random number generation system.
© The Authors, published by EDP Sciences, 2025
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