<p>➀ Fraunhofer ILT and TNO jointly developed and launched a quantum internet node to serve as a research platform for advancing secure quantum communication and network protocols;</p><p>➁ The system leverages NV centers in diamonds and entangled photons to enable tap-proof data transmission, with photonic components like quantum frequency converters ensuring efficient long-distance communication;</p><p>➂ The node aims to establish a European test network, fostering collaboration across academia and industry to optimize photonic technologies and develop heterogeneous quantum network interfaces.</p>