The Willitsch Group - Cold and Controlled Molecules and Ions

Welcome to the Cold and Controlled Molecules and Ions group at the University of Basel led by Prof. Stefan Willitsch. Our research is concerned with the preparation and control of cold molecules and molecular ions and their applications in both chemistry and physics. On this website, you can find information about our group, our research, our teaching and opportunities to join us.

Recent news

Prerna nd Jutta

Prerna and Jutta have recently been awarded prestigious Endress and Ambizione Fellowships. Congratulations !

Our group has recently been awarded an Advanced Grant over CHF 2.5M by the Swiss National Science Foundation to develop quantum technologies for single molecular ions and explore their applications.

Our group


Open positions

  • PhD position in conformationally controlled chemistry
  • PhD and postdoc positions in molecular-ion quantum technologies for precision spectroscopy and chemistry

More information

Recent publications

X. Xing, H. D. Silva Jr, R. Vexiau, N. B. Maafa, S. Willitsch and O. Dulieu, 
"Ion loss events in a cold Rb-Ca+ hybrid trap: photodissociation, black-body radiation and non-radiative charge exchange"

M. Sinhal, A. Johnson and S. Willitsch, 
"Frequency stabilisation and SI tracing of mid-infrared quantum-cascade lasers for precision molecular spectroscopy"

M. Bertrand , A. Shlykov, M. Shahmohamadi, M. Beck , S. Willitsch and J. Faist,
"High-Power, Narrow-Linewidth Distributed-Feedback Quantum-Cascade Laser for Molecular Spectroscopy"
(Photonics 9 (2022), 589)

M. Sinhal and S. Willitsch,
""Molecular-ion quantum technologies""

P. Stranák, L. Ploenes, S. Hofsäss, K. Dulitz, F. Stienkemeier and S. Willitsch,
"Development and characterization of high-repetition-rate sources for supersonic beams of fluorine radicals"
Rev. Sci. Instr. 92 (2021), 103203 (arXiv:2108.05952)

More publications