Bonn 2025 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 64: Poster – Precision Spectroscopy of Atoms and Ions (joint session A/Q)
Q 64.10: Poster
Thursday, March 13, 2025, 17:00–19:00, Tent
A cyclotron detector for (anti-)protons in a cryogenic Penning trap — •Yannick Priewich1, Jan Schaper1, Nikita Poljakov1, Julia Coenders1, 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
As part of the BASE collaboration, the BASE Hannover experiment aims to contribute to CPT symmetry tests [1-3] by using quantum logic techniques for g-factor measurements of (anti-)protons with 9Be+ as cooling and logic ion [4]. Towards this, temperature control and transport of 9Be+ ions have been extensively studied in a cryogenic Penning trap [5,6]. In our next measurement run, we aim to study the coupling of a single proton and a single 9Be+ ion in a double-well potential in a designated so-called “micro-coupling trap” [4].
In this contribution, we will show the design and development of a cryogenic resonator and low-noise amplifier circuit for detection and cooling of the cyclotron motion of (anti-)protons in a Penning trap as well as upgrades to our Penning trap stack.
[1] G. Schneider et al., Science 358, 1081 (2017) [2] C. Smorra et al., Nature 550, 371 (2017) [3] M.J. Borchert et al., Nature 601, 53 (2022) [4] J. M. Cornejo et al., New J. Phys. 23, 073045 (2023) [5] J. M. Cornejo et al., Phys. Rev. Research 6, 033233 (2024) [6] T. Meiners et al., Eur. Phys. J. Plus 139, 262 (2024)
Keywords: cryogenic penning trap; cyclotron detector; cryogenic resonator; low-noise amplifier circuit; cpt symmetry