Hannover 2016 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 44: Precision spectroscopy of atoms and ions (with A)
Q 44.9: Poster
Wednesday, March 2, 2016, 16:30–19:00, Empore Lichthof
Towards a quantum logic based CPT test using single trapped (anti-)protons — •Teresa Meiners1, Malte Niemann1, Anna-Greta Paschke1, Matthias Borchert1, Alexander Idel1, Johannes Mielke1, Amado Bautista-Salvador1,2, Stefan Ulmer3, and Christian Ospelkaus1,2 — 1Institut für Quantenoptik, Universität Hannover — 2Physikalisch Technische Bundesanstalt, Braunschweig — 3Ulmer Initiative Research Unit, RIKEN
We present sympathetic laser cooling and detection concepts for a CPT test based on a g-factor comparison between single protons and antiprotons in a Penning trap. Following the proposal by Heinzen and Wineland [1] the (anti-)proton can be coupled to a laser-cooled (beryllium) ion to achieve reliable preparation near the motional ground state, reducing systematic uncertainties and difficulties in state detection using the continuous Stern-Gerlach effect. Using sideband cooling techniques to the motional ground state, quantum logic spectroscopy can provide an alternative readout scheme.
We discuss ion trap geometries and state transfer schemes as well as laser systems and optical systems for loading, manipulating and detecting the atomic ion. We acknowledge funding by the ERC (ERC StG QLEDS). This project is supported by the BASE collaboration.
[1] Heinzen and Wineland, PRA 42, 2977 (1990)