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Supporting Program Quantum Photonics 2025

QuNET Key-Experiment #2: A metropolitan QKD network for quantum-secure communication of personal data between government

In the QuNET project, a QKD multi-user network with 6 locations and 7 connections was created in Berlin. Together with partners, the secure transmission of sensitive data in a public authority environment was demonstrated - a milestone for quantum-based IT security

Quantum Photonics 2025
Erfurt, Germany

In the scope of the German QuNET initiative, a multi-user QKD (Quantum Key Distribution) 
network was set up in the Berlin metropolitan region. Together with partners from the 
Bundesdruckerei and Deutsche Telekom, a novel use-case for QKD-secured transmission of 
personal data in a government-related context was demonstrated. The heterogeneous QKD 
network, based on so-called Trusted Nodes, integrates various QKD technologies and connects 
six locations via seven QKD links over fiber and free-space channels of different distances. 
Among other things, the realized solutions enable flexible optical rerouting of QKD quantum 
channels for future dynamic networks as well as monitoring of individual node locations using 
SDN agents. In this presentation, we provide an overview of the recent developments,
implemented architecture and employed technologies, and present the latest experimental 
results.

Speakers (1)

Dr. Nino Walenta

Dr. Nino Walenta

Group Leader, Fraunhofer HHI

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Key data

  • Tuesday, May 13, 2025
  • 2:00 PM - 2:20 PM
  • Panel Stage Halle 2
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