Deployment-ready quantum key distribution over a classical network infrastructure in Padua

Current technological progress is driving Quantum Key Distribution towards a commercial and world widescale expansion. Its capability to deliver unconditionally secure communication will be fundamental feature in the next generations of telecommunication networks. Nevertheless, demonstrations QKD implementation real operating scenario their coexistence with classical telecom infrastructure are importance for reliable exploitation. Here we present application implemented overa fiber-based infrastructure. By exploiting just single fiber cable both quantum channel by using simplified receiver scheme one single-photon detector, demonstrate feasibility low-cost ready-to-use systems compatible standard