Stefan Willitsch

The University of Basel in Switzerland is offering a PhD position in the group of Professor Stefan Willitsch, focusing on the development of quantum technologies for single trapped molecular ions and their application in precision spectroscopy. This research area is at the forefront of quantum science, leveraging recent advances in quantum control of ultracold atoms and atomic ions to enable measurements with unprecedented precision. The project aims to extend these capabilities to molecules, which possess a rich level structure combining rotational and vibrational degrees of freedom, opening new scientific perspectives such as tests of fundamental physical concepts, implementation of new frequency standards, and accurate evaluations of physical theories including quantum electrodynamics and fundamental constants. The group has pioneered a novel experimental approach that allows the readout and coherent manipulation of the quantum state of a single trapped molecular ion without destroying the molecule or its quantum state. The PhD project will harness this method to perform highly sensitive and precise spectroscopic measurements on single molecules, introducing innovative approaches to molecular spectroscopy, further developing quantum technologies for molecular systems, and establishing new limits for measurement precision in trapped molecules. The position is embedded within the Basel PhD program on “Quantum Computing and Quantum Technology” (QCQT), the Swiss National Competence Center for Research “Precision,” and the Basel Quantum Center, providing a vibrant interdisciplinary environment and access to cutting-edge facilities. Applicants are expected to hold a MSc degree in physics or physical chemistry, ideally with experience in experimental quantum science, quantum optics, or spectroscopy. The application should include a cover letter, CV, list of publications, transcripts of degree certificates, and contact details for at least two referees. For further information, candidates are encouraged to consult recent publications by the group and visit the group’s website. Applications and inquiries should be directed to Prof. Stefan Willitsch ([email protected]). Applications are accepted until the position is filled. The direct application portal is also available for submissions. This opportunity is ideal for students interested in quantum technologies, molecular spectroscopy, and precision measurement science, offering a chance to contribute to groundbreaking research in a leading European institution.