Advancing Quantum Security for Europe
The newly launched QUARTERNEXT consortium is a coordinated European effort to deploy certifiable, industrial-grade quantum-safe communication infrastructure across the European Union. Backed by the Digital Europe Programme and linked to IRIS² objectives, QUARTERNEXT aligns with the EuroQCI mandate to build resilient quantum communication backbones for sensitive public and private networks.
Practical QKD Deployment and Certification
At the heart of QUARTERNEXT is Continuous-Variable Quantum Key Distribution, or CV-QKD. CV-QKD uses standard telecom components to generate keys from quantum states encoded in light amplitude and phase. The consortium is tackling the hard engineering problems that matter for real networks: miniaturization of transmitters and receivers, integration over existing fiber infrastructure, and coexistence with high-bandwidth classical data streams without performance loss.
Luxquanta coordinates the project while a broad partnership contributes specialized hardware, software and systems engineering to assemble full end-to-end solutions suitable for telecom operators. A parallel workstream focuses on certification through the EU’s Nostradamus infrastructure, which will harmonize testing procedures and security claims so vendors and network operators can adopt QKD with clear, interoperable standards.
Securing European Digital Sovereignty
QUARTERNEXT is explicitly strategic. By developing a domestic supply chain for quantum-safe components and standardized certification paths, the consortium aims to reduce reliance on external vendors for high-security links. This supports Europe’s broader objective of technological sovereignty in critical digital infrastructure.
For researchers, operators and investors, the project signals a shift from lab demonstrations toward repeatable, certifiable deployments. Robust quantum-safe links will also form part of the secure foundation for advanced AI systems and distributed services that require long-term confidentiality and integrity.
As QUARTERNEXT progresses, expect published test reports from Nostradamus trials, demonstrations of CV-QKD over operational fibers, and vendor roadmaps showing industrialized, certified products that can plug into EuroQCI and national secure networks.
