QKD Field Trial (IMAGE) Optica Caption Researchers demonstrated a new simple QKD system over a fiber network in Padua, Italy. A map of the city center [©2021 Google] shows that the transmitter was placed at the ICT Center of UniPD while the receiver was located in the Department of Mathematics. The transmitter and the receiver were connected by 3.4 km of deployed fibers. Credit QuantumFuture Group, Università degli Studi di Padova Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.