Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 20: Atom & Ion Clocks and Metrology I
Q 20.1: Hauptvortrag
Dienstag, 11. März 2025, 11:00–11:30, HS Botanik
Towards quantum logic inspired techniques for high-precision measurements in Penning traps — •Juan Manuel Cornejo1, Jan Schaper1, Nikita Poljakov1, Julia-Aileen Coenders1, Stefan Ulmer2,3, and Christian Ospelkaus1,4 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Germany — 2Ulmer Fundamental Symmetries Laboratory, RIKEN, Japan — 3Heinrich-Heine-Universität Düsseldorf, Germany — 4Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
High-precision experiments in Penning traps have provided the most stringent tests of CPT invariance in the baryonic sector through (anti-)proton q/m ratio and g-factor measurements [1,2]. Within the BASE collaboration [3], we aim to develop quantum logic cooling and detection techniques to enable full motional control over single ions, reducing systematic errors and overall measuring time in (anti-)proton g-factor experiments [4]. In this contribution, we discuss the experimental procedure for implementing these techniques employing a single laser-cooled 9Be+ ion as both a “cooling” and “detection” ion. Furthermore, our recent findings on the manipulation of single 9Be+ ions in our cryogenic multi-Penning trap stack will be presented.
[1] C. Smorra et. al., Nature 550, 371-374 (2017).
[2] M. J. Borchert et. al., Nature 601, 53-57 (2022).
[3] C. Smorra et. al., Eur. Phys. J. Special Topics 224, 3055 (2015).
[4] J. M. Cornejo et. al., New J. Phys. 23, 073045 (2021).
Keywords: Penning trap; Antimatter; Laser cooling; g-factor; CPT symmetry