Heidelberg 2015 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 10: Experimental Techniques

MO 10.3: Vortrag

Dienstag, 24. März 2015, 15:00–15:15, PH/SR106

Non-destructive State Detection and Identification of Molecular Ions — •Amy Gardner, William Groom, and Matthias Keller — Ion Trap Cavity QED and Molecular physics (ITCM) group, University of Sussex, UK

The nature of ion traps allow for extremely well localised atomic and sympathetically cooled molecular species; leading to a variety of applications - most notably cold chemistry, testing fundamental theories, searching for changes in fundamental constants and, potentially, the development of methods for quantum computing. Prerequisite for these applications is the cooling of the molecule's motion and its non-invasive identification. Furthermore, the internal quantum state of the molecule needs to be prepared and, at readout, non-destructively detected.

While blackbody assisted laser cooling was recently demonstrated, the non-destructive state detection of trapped molecules is still beyond current experiments. Employing state selective laser induced dipole forces we aim to detect the internal state of molecular ions by mapping the state information onto the ions motion.

We can also identify different ionic species within a coulomb crystal by measuring the average charge-to-mass ratio of trapped ions with high precision. This is a tool that can be used to investigate chemical reactions between neutral molecules/atoms and trapped molecular ions. The same means can also be achieved by using only laser forces.