Berlin 2014 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 14: Poster: Precision spectroscopy of atoms and ions (with Q)
A 14.24: Poster
Montag, 17. März 2014, 16:30–18:30, Spree-Palais
Quantum Logic Enabled Test of Discrete Symmetries — •Malte Niemann1, Anna-Greta Paschke1, Kai Voges1, Stefan Ulmer2, and Christian Ospelkaus1,3 — 1Institut für Quantenoptik, Leibniz Universität Hannover — 2RIKEN, Ulmer Initiative Research Unit — 3PTB Braunschweig
Much progress has been made recently towards a CPT test with baryons based on the (anti-)proton’s magnetic moment [1, 2]. A big challenge in any such experiment is the spin state measurement for single (anti-)protons. This requires single particle spectroscopy in strong magnetic gradients at ultra-low background noise and long measuring times.
We describe concepts and simulations for an experiment which will implement single-shot spin state readout using quantum logic operations according to the proposal by Heinzen and Wineland [3]. The spin state will be analysed by coupling the (anti-)proton to a co-trapped 9Be+ ion. Compared to the current techniques much faster experimental cycles are expected, and eventually, a significant boost in precision. We discuss trapping geometries, concepts for single (anti-)proton rf sideband control, and for ground state cooling of the atomic quantum logic ion at a magnetic field of several Tesla in a miniaturized Penning trap stack.
A. Mooser et al., Phys. Let. B 723, 78-81 (2013)
A. Mooser et al., Phys. Rev. Let. 110, 140405(2013)
Heinzen and Wineland, PRA 42, 2977 (1990)