Heidelberg 2015 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster: Quantum Optics and Photonics III
Q 62.24: Poster
Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer
Optimized Setup for Quantum Logic Spectroscopy of single Molecular Ions — •Jan Christoph Heip1, Fabian Wolf1, Florian Gebert1, Yong Wan1, and Piet O. Schmidt1,2 — 1QUEST Institut, Physikalisch-Technische Bundesanstalt, Braunschweig, Germany — 2Institut für Quantenoptik, Leibniz Universität Hannover, Germany
Molecular ions have a rich level structure and therefore are useful for applications ranging from precision measurements to quantum information processing. Besides the motional degrees of freedom, they exhibit also vibrational and rotational degrees of freedom, rendering direct laser cooling a challenge. We demonstrate sympathetic motional ground state cooling of a 24MgH+ molecular ion through a co-trapped 25Mg+ ion. Furthermore, we present first results on the dispersive interaction with an oscillating dipole force coupling internal and external degrees of freedom of the molecular ion. Finally, the design of a new vacuum system will be presented which will allow loading and trapping of other molecular ion species with applications for tests of fundamental physics.