Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 60: Precision Spectroscopy of Atoms and Ions VI (joint session A/Q)
Q 60.2: Vortrag
Donnerstag, 13. März 2025, 15:00–15:15, KlHS Mathe
Simulating coupled oscillators in a Penning trap for (anti-)proton g-factor measurements — •Nikita Poljakov1, Jan Schaper1, Julia Coenders1, Yannick Priewich1, Juan Manuel Cornejo1, Stefan Ulmer3,4, and Christian Ospelkaus1,2 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Germany — 2Physikalisch-Technische Bundesanstalt, Braunschweig, Germany — 3Ulmer Fundamental Symmetries Laboratory, RIKEN, Japan — 4Heinrich-Heine-Universität Düsseldorf, Germany
The BASE collaboration tests CPT symmetry via high-precision measurements of the (anti-)proton charge-to-mass ratio [1] and g-factor [2]. To improve g-factor sampling rates, we are developing quantum logic spectroscopy [3] with a laser-cooled 9Be+ ion in a cryogenic Penning trap. This requires cooling the 9Be+ ion and (anti-)proton to their motional ground states. Key milestones include optical sideband spectroscopy [4], ground-state cooling of a single 9Be+ ion [5], and fast adiabatic transport [6]. We aim to couple an (anti-)proton to a cooled 9Be+ ion via Coulomb interaction in a double-well potential created by a microfabricated trap. Here, we present project updates and simulations of coupled 9Be+ ions and a single 9Be+ ion coupled to an (anti-)proton.
[1] M.J. Borchert et al., Nature 601 (2022) [2] C. Smorra et al., Nature 550 (2017) [3] P.O. Schmidt et al., Science 309 (2005) [4] J.M. Cornejo et al., Phys. Rev. Res. 5 (2023) [5] J.M. Cornejo et al., Phys. Rev. Res. 6 (2024) [6] T. Meiners et al., Eur. Phys. J. Plus 139 (2024)
Keywords: Penning trap; antimatter; CPT; g-factor; quantum logic