EuroQCI (European Quantum Communication Infrastructure) is a major initiative by the European Union to develop a secure, continent-wide quantum communication network. By leveraging the principles of quantum mechanics, EuroQCI aims to protect sensitive data and communications against cyber threats, including those posed by future quantum computers. The project involves connecting public authorities, critical infrastructures, and other key sectors across EU member states with ultra-secure quantum key distribution technologies. This infrastructure is designed to enhance Europe’s digital sovereignty and cybersecurity resilience.