The QUADRATURE project focuses upon the grand challenge of scalability in quantum computers from an architectural or full-stack standpoint. We are aiming to explore the feasibility of architectures composed of multiple quantum processors (Qcores) that allow to scale up quantum computing systems. This is enabled by networks-in-a-package with a dual character that includes a quantum-coherent link for quantum information transfers coexisting with a cryogenic wireless communication network for exchanging classical data and synchronization.