We offer Ph.D. positions in quantum foundations, quantum information theory and gravitational quantum physics. The positions are associated with the research groups of Č. Brukner (https://www.iqoqi-vienna.at/research/brukner-group), B. Dakić (https://dakic.univie.ac.at/) and M. Müller (https://www.iqoqi-vienna.at/research/mueller-group) at the Institute for Quantum Optics and Quantum Information (IQOQI) of the Austrian Academy of Sciences and the Faculty of Physics, University of Vienna, Austria. All information regarding the application procedure can be found on the Vienna Center for Quantum Technologies (VCQ) webpage: https://vcq.quantum.at/. Interested candidates should apply through the VCQ online platform (https://vcq.quantum.at/application/). For more details on our research program, see our group web pages.