Quantum Networks

Research on quantum networks seeks to seamlessly incorporate quantum communication into modern telecommunication systems. Our work is dedicated to improving QKD device performance, establishing robust certification and standardization frameworks, and advancing techniques for effective network control and key management.

Quantum networks serve as the backbone for quantum key distribution (QKD) and distributed quantum computing, enabling highly secure communication and advanced computational capabilities. These networks can be established using different channels depending on infrastructure availability. Optical fiber is commonly employed for local and wide-area networks as well as communication within buildings, while free-space links facilitate quantum communication via direct ground-to-ground, airborne, and satellite-based channels.

In an extended quantum network, ensuring the secure and efficient delivery of quantum keys to their designated recipients is crucial. Our group works on core aspects such as network control, key management, and the optimization of key rates in QKD devices. Focus is placed on ensuring compatibility with emerging quantum devices, including repeaters, computers, and sensors. Network control plays a pivotal role by managing the physical connections between parties, ensuring the stability and efficiency of the network. Our research on advanced protocols and key management aims at efficient key distribution in quantum networks. Furthermore, we collaborate with certification institutions to develop certification processes and the standardization of QKD devices.