AQUnet is set to establish a nationwide fiber optic network in Austria for the distribution of quantum information and quantum metrology signals. This initiative involves upgrading and extending the existing data backbone infrastructure, managed by ACOnet (Austrian Academic Computer Network), to ensure the secure and stable transmission of quantum signals. The project will connect various consortium locations in Vienna and Innsbruck, as well as external users. Additionally, connections will be established with European partner initiatives such as REFIMEVE+ (France), PTB-LMU (Germany), and ISI-Brno (Czech Republic).

Through AQUnet, ACOnet, with support from project partners and the scientific community, will extend the current data infrastructure to accommodate quantum signals. Where possible, "classical" fiber optic channels will be upgraded to support simultaneous quantum transmission, existing dark fibers will be utilized, and new channels will be created. The fragile nature of quantum signals will require specialized amplification stages, particularly along the Innsbruck-Vienna route. A central node will be established for the star-shaped distribution of an ultrastable optical reference signal, linked to Austria's primary atomic clock at the federal office for calibration and surveying (BEV).