QR.X (BMBF)
PROJECT PARTNER:
- LUDWIG MAXIMILIAN UNIVERSITY OF MUNICH| Germany
- HUMBOLDT-UNIVERSITÄT ZU BERLIN | Germany
- KARLSRUHE INSTITUTE OF TECHNOLOGY (KIT) | Germany
- UNIVERSITY OF KASSEL | Germany
- ULM UNIVERSITY | Germany
- FRAUNHOFER HEINRICH-HERTZ-INSTITUT| Berlin, Germany
- DEUTSCHE TELEKOM AG | Bonn, Germany
- RUHR UNIVERSITY BOCHUM | Germany
- UNIVERSITY OF WÜRZBURG| Germany
- TU DORTMUND UNIVERSITY | Germany
- PADERBORN UNIVERSITY| Germany
- UNIVERSITY OF STUTTGART | Germany
- TECHNICAL UNIVERSITY BERLIN| Germany
- LEIBNIZ UNIVERSITY HANNOVER | Germany
- LEIBNIZ INSTITUTE FOR SOLID STATE AND MATERIALS RESEARCH (IFW) | Dresden, Germany
- PHYSIKALISCH-TECHNISCHE BUNDESANSTALT (PTB)| Braunschweig, Germany
- RHENISH FRIEDRICH WILHELM UNIVERSITY OF BONN| Germany
- MAX PLANCK INSTITUTE OF QUANTUM OPTICS | Garching, Germany
- TECHNICAL UNIVERSITY OF MUNICH| Germany
- FREE UNIVERSITY OF BERLIN | Germany
- JOHANNES GUTENBERG UNIVERSITY MAINZ| Germany
- HEINRICH HEINE UNIVERSITY DÜSSELDORF | Germany
- UNIVERSITY OF BREMEN| Germany
- HIGHFINESSE LASER AND ELECTRONIC SYSTEMS GMBH | Tübingen, Germany
- QUBIG GMBH | Munich, Germany
Secure fiber-based quantum communication
QUBIG is taking part in the research network "Quantum Repeater.Link (QR.X)" supported by the German Federal Ministry of Education and Research (BMBF). The aim of the research network is the first implementation of novel quantum repeaters and their use under real conditions.
MOTIVATION
Progressive digitization requires secure information transmission, vital for our democratic society. Quantum communication ensures long-term security against classical and quantum computers. However, current quantum communication links face distance limitations (around 100 km). Quantum repeaters solve this by connecting nodes using quantum memories and simple processing units. Multiple repeaters in series enable transmission beyond 100 km.
GOAL AND APPROACH
The project "Quantum Repeater.Link (QR.X)" aims to implement and test novel quantum repeaters under real conditions. It explores three technology strands to develop modular and portable components for quantum repeaters. The project compares the advantages of each system and seeks to create hybrid quantum repeaters. It focuses on integrating powerful error correction techniques to enhance performance. The developed technology will be tested outside the lab by connecting repeaters to fiber optic test routes. The project also includes the development of theoretical foundations and protocols for quantum communication systems.
INNOVATION AND PERSPECTIVES
In QR.X, mobile quantum repeater systems will be developed based on diverse technology platforms. Their use under real conditions will provide important insights that are essential for a future quantum communication network with technologies developed in Germany. Industrial partners will contribute to addressing key technological and engineering aspects. The project advances quantum repeater development for long-range communication, bolstering Germany and Europe's technological and digital sovereignty through secure data transmission.
