Quantum Key Distribution Testbeds
Before a new technology can be commercially used on a large scale, first some practical experience has to be obtained. This is usually done in testbeds, where commercial hardware is used under realistic conditions.
Quantum Key Distribution (QKD) facilitates the generation of common secret random numbers for encryption via the exchange of special light states. The fundamental laws of quantum physics prevent any unrecognized eavesdropping. As part of the second quantum revolution this technology is somewhere between research and commercial application.
This document provides a global overview on active and planned QKD testbeds in the period 2020 to early 2024. The focus is on the developments in Germany and Europe. For every testbed the used technologies, network topologies, goals, participants and current state are presented.
WiN-Lab Research: Quantum Key Distribution Testbeds
Felix Trunk, Jasmin Neumann, Susanne Naegele-Jackson. July 2024