SAMOP 2023 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 7: Poster

MS 7.3: Poster

Donnerstag, 9. März 2023, 16:30–19:00, Empore Lichthof

Towards deterministic ionization and loading of molecules for quantum logic spectroscopy — •René Nardi, Stefan Walser, Brandon Furey, Zhenlin Wu, Guanqun Mu, and Philipp Schindler — Institut für Experimentalphysik, Universität Innsbruck

Our group studies the complex rovibrational structure of trapped molecular ions. These states are inaccessible to standard quantum information readout methods, but can be explored by co-trapping them with an atomic ion for which a convenient cooling and qubit level scheme exists. The molecular states can then be coupled to an electronic state of the atomic ion via quantum logic spectroscopy. To prepare and load arbitrary molecular species, we are developing a system where a molecular gas is leaked in, photoionized, and then accelerated towards a linear Paul ion trap. Ion optics are then used to steer the molecules through a differentially pumped region and into our UHV chamber. Molecules can be injected into the trapping region by adjusting the accelerating voltage and aligning the molecular beam through an aperture in the trap end cap. Here they can interact with an atomic ion crystal, cooling the molecules and resulting in their entrapment. We are building a setup to test this approach and we use time-of-flight mass spectrometry to map out the molecular ion species produced from photoionization of various gasses.