In the page's words:

Matter and Light for Quantum Information (ML4Q) is a Cluster of Excellence that has been funded as part of the German Research Foundation's (DFG) Excellence Strategy since 2019. ML4Q is a joint project of the Universities of Cologne, Aachen, Bonn and Forschungszentrum Jülich. The aim of ML4Q is to create new computer and network architectures based on the principles of quantum mechanics.