Projecte ofert
Títol: Modeling and Characterization of Free-Space & Ground-to-Satellite Quantum Network Links
Per assignar-vos el projecte us heu de dirigir al director/a perquè us l'assigni.
Director/a: JOFRE CRUANYES, MARC
Departament: ENTEL
Títol: Modeling and Characterization of Free-Space & Ground-to-Satellite Quantum Network Links
Data inici oferta: 21-10-2026 Data finalització oferta: 21-05-2027
Estudis d'assignació del projecte:
DG ENG AERO/SIS TEL- DG ENG AERO/TELEMÀT
- DG ENG SISTE/TELEMÀT
| Tipus: Individual | |
| Lloc de realització: EETAC | |
| Paraules clau: | |
| Quantum Networks, Quantum Resource Distribution, Free-Space Optical (FSO) Links, Link Layer, Quantum State Relaying | |
| Descripció del contingut i pla d'activitats: | |
| Description
Quantum Communications allows to distribute quantum information resources through fundamental quantum principles, but real-world scalability requires extending point-to-point physical channels into multi-node telecommunication networks. Optical satellite nodes (LEO/GEO) serving as spaceborne relays must switch, and route quantum resources to terrestrial Optical Ground Stations (OGS) and edge nodes [1], [2]. These terrestrial nodes then distribute and switch quantum resources across fiber backhaul infrastructure to end users [3]. This project, conducted in collaboration with the i2CAT Research Center and LuxQuanta Technologies, focuses on processing frame streams containing atmospheric-produced error distributions, calculating optimal framing boundaries, buffer sizing, and relay parameters across space-ground-terrestrial interfaces. Additionally, this thesis proposal offers the possibility of being combined with an on-site internship at the cited institutions. Methodology and Objectives to achieve The main objective of this research project is to process, analyze, and characterize received quantum frame streams with atmospheric error distributions to optimize Layer 2 transmission frame lengths, buffer queue management, and relaying performance across terrestrial network nodes. The specific objectives of this research project are: 1. Parse generated frame detection traces from vertical LEO/GEO satellite overpasses and horizontal terrestrial links, integrating decoy-state BB84 error-correction framing parameters and error distribution profiles. 2. Calculate dynamic adjustments for transmission frame lengths and time duration windows based on fluctuating error densities to maximize net quantum resource yield. 3. Quantify link performance bottlenecks, atmospheric signal errors, and quantum resource transmission efficiency under varying environmental conditions. Workplan First, during the development phase, the student will be provided with an initial architectural baseline, baseline atmospheric error distribution profiles, and decoy-state BB84 framing parameters prepared by the thesis directors. Using these models, the student will generate received frame detection traces containing realistic atmospheric error distributions across vertical LEO/GEO satellite overpasses and horizontal terrestrial links. At the configuration and deployment stage, the candidate will set up the frame parsing logic to analyze error densities in the generated frame streams and implement algorithms that calculate dynamic adjustments for transmission frame lengths and time duration windows, as well as analyze buffer queue management and relaying strategies. Finally, at the characterization stage, the student will have a fully equipped software environment and laboratory tools, along with the guidance of the thesis directors, to execute the evaluation framework, quantifying link performance bottlenecks, atmospheric signal degradation, buffer queue dynamics, and net quantum resource transmission efficiency under varying environmental conditions. References [1] R. Bedington, J. M. Arrazola, and A. Ling, "Progress in satellite quantum key distribution," Npj Quantum Inf., vol. 3, no. 1, p. 30, Aug. 2017, doi: 10.1038/s41534-017-0031-5. [2] L. de Forges de Parny et al., "Satellite-based quantum information networks: use cases, architecture, and roadmap," Commun. Phys., vol. 6, no. 1, p. 12, Jan. 2023, doi: 10.1038/s42005-022-01123-7. [3] V. D. Tubío, M. B. Aldecocea, D. L. Bakker, G. C. Amaral, D. López, and J. Borregaard, "Quantum key distribution in the Iberian Peninsula," Opt. Quantum, vol. 4, no. 1, pp. 22-30, Feb. 2026, doi: 10.1364/OPTICAQ.581903. |
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| Orientació a l'estudiant: | |
| No prior knowledge in advanced hardware design or quantum information knowledge is required for this project. The student must start writing the project report from the beginning of the work and regularly submit progress to the directors during regular meetings. The work is designed to be completed during a semester in the laboratory with constant dedication and approximately five hours a day.
For further information contact: Prof. Marc Jofre: marc.jofre@upc.edu Dept. Network Engineering - EETAC https://sites.google.com/view/marcjofre/research |
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| Requereix activitats hardware: No | |
| Requereix activitats software: No | |
| Horari d'atenció a estudiants per a l'assignació de projecte: Any time. contact by email: marc.jofre@upc.edu |
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