Quantum technologies use the quantum properties of physical objects (e.g. photons, atoms or more macroscopic objects) for both practical purposes and scientific experiments. In the last century, these effects have been mostly studied in academic settings, but recent years have seen an increasing development towards real-world applications. In general, quantum technologies can enable measurements with higher precision (e.g. gravity & accelerations, time & frequency, electromagnetic fields, etc…), that are leading to new type of devices (quantum computer, quantum cryptography) or enable fundamental physics science experiments (e.g. exploring limits of quantum theory, quantum gravity). In many of these applications, space plays an important role. Additionally, new concepts such as the rising performances of quantum computers, the quantum internet or quantum sensing devices offer many opportunities for being used either in space or being beneficial for the space industry in general.
In this talk, I am going to present the status of European Space Agency in view of space technologies and payloads in relation to satellite quantum optical communications and Cyber security.