Quantum Optics focuses on diverse phenomena in light-matter interactions, where the quantum properties of light and matter play an important role. Quantum technology is a rapidly evolving interdisciplinary field, which bridges physics, computer science, and engineering. Over the past decades, quantum-optical systems have become key enablers and driving forces of quantum technology applications.

In this talk, I will present an accessible overview of my research activities in Quantum Optics and Quantum Technology, covering topics such as the interaction of free-electron-laser radiation with atoms, the engineering of quantum networks and reliable quantum-state transfer, quantum cryptography, and physical unclonable functions.