QuaNTUM: A Modular Quantum Communication Testbed for Scalable Fiber and Satellite Integration
Julien Ch\'ened\'e, Tjorben Matthes, Josefine Krause, Asli Cakan, Tobias Vogl

TL;DR
QuaNTUM is a modular quantum communication testbed that supports scalable fiber and satellite links, integrating advanced photon sources and enabling secure quantum networks for future global connectivity.
Contribution
It introduces a versatile, open-access platform combining fiber and satellite quantum links with novel photon sources for scalable quantum communication research.
Findings
Successful integration of solid-state single-photon sources
Stable high-fidelity quantum key distribution demonstrated
Satellite-ground links enabled for quantum entanglement distribution
Abstract
Secure communication is essential for modern society, from financial transactions to critical infrastructure. As classical encryption faces threats from advancing computational power, quantum communication provides a fundamentally secure alternative based on physical laws. We present QuaNTUM (Quantum Network at the Technical University of Munich), a modular and extensible quantum communication testbed enabling scalable experiments across fiber-based campus networks and satellite-ground links. The terrestrial network connects research institutions in Garching near Munich via single-mode fibers in a star topology with polarization-maintaining components, multiplexers, and time-synchronized analysis modules. Active polarization control and real-time feedback support stable qubit transmission for high-fidelity quantum key distribution and entanglement distribution. A key feature is the…
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Taxonomy
TopicsQuantum Information and Cryptography · Quantum Mechanics and Applications · Quantum Computing Algorithms and Architecture
