We search for a motivated master student to work on rare earth ion doped thin films for quantum technologies at the Crystals and Quantum State Dynamics Team. We have developed a hybrid thin film fabrication approach combining MBE and CVD deposition techniques to obtain quantum-grade epitaxial rare-earth oxide thin films on silicon . This internship will have two main objectives: (i) the optimisation of the thin-film deposition conditions towards the reproducible obtention of smooth epitaxial Y2O3 thin films doped with REI. (ii) the fabrication of Y2O3 membranes by both dry and wet chemical etching techniques. The deposited thin films, and membranes quality and eligibility for quantum technology applications will be assessed by the candidate using different morphological and optical characterisations. We search for candidates aiming at continuing this research in the framework of a PhD project.