QKD Systems
Quantum B delivers access to QKD systems for organizations that require the highest level of protection for key exchange. Through our partner ecosystem, we support the deployment of quantum key distribution technologies that use the laws of quantum physics to establish and protect cryptographic keys for critical communications.
Why QKD?
Quantum Key Distribution offers something unique in cybersecurity: security grounded not in assumptions about computational difficulty, but in the laws of physics themselves. Unlike post-quantum cryptography, which is designed to resist attacks from future quantum computers yet still relies on mathematical hardness assumptions that may be challenged by new algorithms, implementation advances, or unforeseen breakthroughs, QKD has a different foundation. Its core security has been theoretically established and formally proven within quantum physics: any attempt to intercept or measure the key exchange necessarily disturbs the quantum states involved and can therefore be detected. For organizations protecting critical infrastructure and high-value communications, this makes QKD not merely another upgrade in encryption, but a fundamentally different security model, one that offers a provable path toward long-term confidentiality where the highest levels of assurance are required.
Where it fits
QKD is best suited to environments where the value of the data, the sensitivity of the communications, and the consequences of compromise justify the highest level of assurance. In practice, this includes inter-site links, critical infrastructure backbones, telecom networks, and other high-assurance communication environments where key exchange must remain secure over the long term. It is especially relevant for sectors such as government, finance, defense, energy, and other operators of mission-critical systems, where protecting data in transit is not only a technical requirement but a matter of operational resilience, national security, and strategic trust.
What Quantum B provides
Quantum B supports organizations across the full journey from strategy to implementation. We help define the right target architecture, identify and evaluate the most suitable technology and integration partners, prepare deployment and operational plans, and support implementation in real-world environments. Our approach is designed not as an isolated point solution, but as part of a broader cybersecurity transition, ensuring that QKD can coexist with wider migration programs such as QCMS and with the organization’s overall move toward quantum-safe security.