Hannover 2020 – scientific programme
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A: Fachverband Atomphysik
A 14: Poster Session - Atomic Physics II
A 14.8: Poster
Tuesday, March 10, 2020, 16:00–18:00, Empore Lichthof
Towards Quantum Logic Spectroscopy of Molecular Oxygen Ions — •Maximilian J. Zawierucha1, Jan C. Heip1, Fabian Wolf1, and Piet O. Schmidt1,2 — 1Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38159 Braunschweig — 2Institut für Quntenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover
Precision spectroscopy of vibrational overtones in oxygen molecular ions is a promising route for an improved upper bound on a possible variation of the proton-to-electron mass ratio. Here, we present the status of our experiment, aiming at high precision quantum logic spectroscopy of molecular oxygen ions. In the past, we have demonstrated a non-destructive internal state detection scheme for 24MgH+ ions, that relies on the detection of state dependent forces with a co-trapped 25Mg+ ion. We have theoretically developed a variant of this scheme for the investigation of O2+. Further, we will present recent experimental results on rotational state-resolved ionization from a new molecular beam setup that will be used to load single oxygen molecules into a linear Paul trap for future quantum logic spectroscopy experiments.