Motional quantum state engineering for quantum logic spectroscopy of molecular ions

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Opt-84: F. Wolf: Motional quantum state engineering for quantum logic spectroscopy of molecular ions 106 S.,25 Abb., 1 Tab., ISBN 978-3-95606-454-8, 2019 € 17,50 This obstacle can be overcome by employing quantum logic technique to enable precision spectroscopy molecules. For this purpose, the molecular ion is co-trapped with an atomic ion that has a suitable transition for laser cooling and state detection. The Coulomb repulsion couples the motional degrees of freedom of the ions. This coupling enables sympathetic cooling and information transfer from the molecule’s internal state to the atomic qubit. In this cumulative thesis, the first experimental implementation of a quantum logic assisted scheme for reading out the internal state of a molecular ion is presented. In this scheme, the magnesium-25 ion is used to detect a state dependent force that acts on the molecular 24MgH+-ion.