EuroQCI will enhance the security of critical government data by leveraging quantum key distribution (QKD), a technology that uses the principles of quantum physics to detect any attempt at interception. The system will also protect Europe's vital infrastructure – from power grids that supply our electricity to emergency services that protect our communities in times of crises. This marks a significant step toward meeting the EU's Digital Decade target of being at the forefront of quantum capabilities by 2030.

The technology works through two complementary systems. On Earth, it leverages existing fibre-optic internet cables enhanced with quantum security features. In space, ESA is leading the development of a satellite constellation through its Optical and Quantum Communications – Scylight programme to expand the reach of the QKD secure network across Europe and beyond.

This effort is being advanced through ESA’s Security And cryptoGrAphic mission (SAGA), which will demonstrate and validate space-based quantum technologies in orbit. In partnership with an industrial consortium led by SES Techcom and the European Commission, ESA is also supporting the development of Eagle-1, the first satellite for this space-based QKD system, scheduled for launch in 2026.

The project has received strong backing from all 27 EU Member States, demonstrating its importance for Europe's future. The European Commission launched its first implementation phase for EuroQCI in 2023, with the next milestone focused on its gradual integration into IRIS², Europe’s new secure satellite constellation.

"Today, we celebrate the successful conclusion of negotiations and the signing of this Agreement, a pivotal step forward that highlights the power of partnership in achieving ambitious goals," said Josef Aschbacher, ESA's Director General. "Through our collaboration with the European Commission and Member States, we will ensure EuroQCI sets the global standard for secure and innovative quantum communication. ESA will lead the Contracting, Design, and Qualification authority, developing EuroQCI to protect critical information and assets, and spearheading R&D activities in space-based quantum technologies.”

Laurent Jaffart, ESA's Director of Connectivity and Secure Communications, said: "By integrating quantum-based systems into existing infrastructures, EuroQCI will create a secure communication layer resistant to emerging cyber threats, advancing Europe's cybersecurity strategy and strengthening our leadership in quantum technologies."

Roberto Viola, the European Commission's Director-General of Communications Networks, Content and Technology, said: “Yesterday, the Commission had announced the Competitiveness Compass, the key policy agenda for the coming years, which includes maintaining a leading position in quantum technologies. I therefore welcome the agreement with ESA under the EuroQCI, which brings us one step closer to realising our vision in quantum and more specifically of a quantum safe communication network for Europe based on terrestrial and satellite technologies. This agreement builds on our long-standing partnership with ESA in key space technologies and applications such as Copernicus, Galileo and IRIS² initiative.”