At ALLEGRO, we’re tackling one of the most exciting challenges in quantum communications: scaling up Quantum Key Distribution (QKD) networks to cover larger, more complex infrastructures — potentially operated by multiple independent organizations across adjacent domains.
🔐 Our Reference Architecture
As we evolve towards more sophisticated QKD networks, we continue to build on a three-layer model:
1️⃣ QKD Layer – the optical backbone of the network.
2️⃣ Key Transport & Management Layer – handling secure key distribution and lifecycle management.
3️⃣ Secure Application Layer – the end-users of quantum-secure keys, integrating them into critical applications.
Each node in this architecture integrates QKD modules, Key Management systems, local controllers, and secure application modules — all orchestrated to deliver end-to-end quantum-safe security.
📊 While network control and management architectures differ based on use cases, our modular, scalable approach ensures flexibility for a wide range of operational scenarios.
💡 Excited to be working with our partners to lay the groundwork for Europe’s future quantum communication infrastructure. Stay tuned as we continue to push the boundaries of secure networking in the quantum era.
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