🔐🌍 At the recent QCI Days in Athens, KEEQuant proudly demonstrated its Quantum Key Distribution (QKD) and Key Management System (KMS) as part of the Austrian QCI-CAT domain — with a live quantum-secure link extended directly to our booth! A real-world showcase of what’s possible when research meets robust engineering.

This successful setup was made possible thanks to great collaboration with:

🇬🇷 HellasQCI
🇪🇸 MADQuantum
🇦🇹 AIT/QCI-CAT

A big thank you to all our partners and the event organizers for making this milestone possible. These cross-border demonstrations clearly show the interoperability and readiness of quantum communication across Europe. 🤝✨

With this, KEEQuant’s QKD and KMS products are fully ready to meet the needs of the upcoming Connecting Europe Facility (CEF) projects, helping secure the continent’s digital infrastructure for decades to come.

The DemoQuanDT consortium is thrilled to announce a new preprint on the deployment of a carrier-grade quantum key distribution (QKD) network. This work highlights a groundbreaking achievement: the creation of a quantum-secured link spanning 923 km between the German cities Berlin and Bonn. The project demonstrated not only the technical feasibility of integrating QKD into existing network infrastructures, but also the scalability and practical implementation of QKD in a real-world carrier environment.

This milestone would not have been possible without the dedicated contributions of the partners: Deutsche Telekom, Adva Network Security GmbH, Hochschule Darmstadt, KEEQuant, Rohde & Schwarz Cybersecurity and Technische Universität Darmstadt.

You can find the full preprint here: https://arxiv.org/pdf/2503.21186 , and more information on the project site: https://www.forschung-it-sicherheit-kommunikationssysteme.de/projekte/demoquandt

We are excited to announce a major technology milestone: KEEQuant’s Andariel Testbed Series CV-QKD systems now support 16 dB channel loss!

Why is this big news? Because 16 dB reach (80 km in standard telecom fiber) means that continuous-variable QKD is no longer limited to short links—it’s now viable not just for metro and regional, but also for long-haul, core, and data center interconnect networks, broadening its real-world application space. 🚀 This breakthrough brings us a step closer to real-world deployment at scale, making CV-QKD the scalable option for securing critical infrastructure.

✅ Security matters: Our security proofs are well-founded and sound.
➡️ What’s next? Even more reach, full certification, and further miniaturization using photonic integrated circuits (PICs).
📄 Get the full details – Download the datasheet here.

The future of quantum-secure communication is here—and we are just getting started. 💡

We’re thrilled to share that the Karlsruhe Institute of Technology (KIT) has officially launched a groundbreaking test of quantum key distribution (QKD) for secure communication networks, as highlighted here

• KIT press release
• Spiegel Online Wissenschaft
• Zeit Online
• Süddeutsche Zeitung
• LinkedIn Post 1
• LinkedIn Post 2

At KEEQuant, we’re proud to have provided our Andariel Testbed Series QKD system for the link. A huge thank you to all our partners and supporters who made this possible, including but not limited to Sebastian Randel , David Hunger and Patrick Matalla who made this impressive presentation possible. Your expertise and dedication are key to driving innovation forward!

Together with our partner CESNET, a provider of IT services for academia and science in the Czech Republic, we are performing integration tests of Quantum Key Distribution (QKD) into the CESNET campus network to prepare solutions for a quantum-safe future. This is part of the EU flagship project SEQRET, led by KEEQuant and funded by the Digital Europe Programme. The project’s goals are to provide customer-centric, certifiable and scalable QKD solutions.

The KEEQuant “Andariel Testbed Series” product relies on Continuous-Variable QKD (CV-QKD). It is currently the only QKD technology that can be fully chip-integrated. Consequently, in the future, high-volume manufacturing and lower manufacturing costs will become tangible for CV-QKD, which is going to lead to a more widespread adoption of the technology. Further advantages of an integrated solution are significant reductions in size, weight, and power consumption, along with improved ruggedness of QKD.

With the collaboration between CESNET and KEEQuant, both parties ensure that the engineering of the CV-QKD device is aligned with real-world network requirements. This will be further explored in the collaboration within the SEQRET project.

Stay tuned for more updates on how we are securing the future of communication!

At PMRExpo 2024 in Cologne, KEEQuant showcased its latest advancements in quantum key distribution (QKD), highlighting the future of secure communication in the quantum era.

Quantum Security for Critical Infrastructure

KEEQuant’s QKD technology leverages the principles of quantum physics to create encryption keys that are fundamentally secure against any computational attack, including those from future quantum computers. This innovation is particularly vital for sectors requiring long-term data protection, such as healthcare, finance, logistics, and government agencies. By ensuring that sensitive information remains confidential for decades, KEEQuant addresses the pressing need for durable cybersecurity solutions.

Expanding Applications Beyond Fiber Optics

In collaboration with research institutions like the Fraunhofer Institute, KEEQuant is extending the reach of QKD beyond traditional fiber optic networks. The company is developing solutions for ad hoc networks, enabling secure communication for mobile platforms such as aircraft, ships, and vehicles. This flexibility ensures that both stationary and mobile infrastructures can benefit from quantum-secure communication.

A Paradigm Shift in Cryptography

KEEQuant’s approach represents a significant shift from conventional encryption methods. Unlike traditional systems vulnerable to the “store-now-decrypt-later” strategy employed by some adversaries, QKD provides a level of security that is not reliant on computational complexity but on the fundamental laws of physics. This ensures that intercepted data remains indecipherable, safeguarding information against future technological advancements in decryption.

For more details on KEEQuant’s participation at PMRExpo 2024, visit the video here: https://www.messe.tv/2024/pmrexpo/keequant-quantenschluesselverteilung

We are excited to announce that the DemoQuanDT project has successfully entered live operation! 🎉 Over a 900+ km quantum-secured network across Germany, between Berlin and Bonn, we demonstrated real-time Quantum Key Distribution (QKD), including dynamic routing of quantum-secured connections.

📍 Live Demo in Berlin
At the official demonstration in Berlin, representatives from the German Federal Ministry of Education and Research (BMBF) witnessed the system in action, showcasing how QKD can be integrated into modern communication networks using additional components like KEEQuant’s key management system KMS1 Evaluation Series. This marks a major step toward a scalable and interoperable quantum-secured infrastructure.

🔑 Why is this important?
The project’s focus on carrier network integration and the underlying architecture aspects provide a blueprint for similar and future quantum networks. A prominent example is the EuroQCI infrastructure spanning across the European Union. Additional features like cross-border networks and inter-carrier-network links are supported .

👏 A huge thank you to all project partners:
📡 Deutsche Telekom | 🔐 Adva Network Security | 🔬 KEEQuant | 🛡 Rohde & Schwarz Cybersecurity | 🎓 Hochschule Darmstadt | 🏛 TU Darmstadt

This is a major milestone in building a quantum-secured future for Germany and beyond! 🚀

🔗 Learn more on the project’s site.

Speaking with the words of our host, we definitely enjoyed the liveliness of the QKD ecosystem at the SQuaD-Workshop@MuQuaNet. We contributed with talks and panel discussions and enjoyed the personal meetings all along the three days in Neubiberg. Looking forward to the next meeting at PTB!

Was braucht es noch um Quantenkryptographie zur breiten Anwendung zu bringen und unsere kritischen Infrastrukturen abzusichern? Frank Grotelüschen vom Deutschlandfunk hat dazu Ulrich Eismann im Rahmen der sehr hörenswerten Podcastreihe “Quantentechnologie im Realitätscheck” interviewt. Die kurzweiligen sechs Minuten werden heute Nachmittag 16:35 ausgestrahlt und sind jederzeit als Podcast verfügbar.