The Eagle-1 satellite will be the first space-based quantum key distribution system to be developed under a partnership between ESA, the European Commission and space companies in Europe. It will pave the way towards an ultra-secure network that uses quantum key distribution, using the unbreakable laws of physics to distribute encryption keys in such a way that any attempt to eavesdrop is immediately detected, to keep information safe, significantly boosting European autonomy in cybersecurity and communications.

Eagle-1 will demonstrate the feasibility of quantum key distribution technology within the EU using a satellite-based system. It will demonstrate and validate quantum key distribution technologies from low Earth orbit to the ground and provide valuable mission data for the development and deployment of the European Quantum Communication Infrastructure (EuroQCI), which will be integrated into the European secure connectivity system. It will allow the EU to prepare for a sovereign, autonomous cross-border quantum secure communications network.

The system is being developed by satellite company SES headquartered in Luxembourg, which is leading a consortium of more than 20 European companies.