A robust method to reach the motional quantum regime of (anti-)protons in cryogenic multi-Penning traps
Autor(in); Institution
Poljakov, Nikita; Leibniz Universität Hannover, Institut für Quantenoptik, Hannover, GERMANY
Schaper, Jan; Leibniz Universität Hannover, Institut für Quantenoptik, Hannover, GERMANY
Coenders, Julia-Aileen; Leibniz Universität Hannover, Institut für Quantenoptik, Hannover, GERMANY
Hoffmann, Philipp L.; Leibniz Universität Hannover, Institut für Quantenoptik, Hannover, GERMANY
Cornejo, Juan M.; Universidad de Cadiz, Departamento de Fisica de la Materia Condensada, Cadiz, SPAIN
Hammerer, Klemens; Leibniz Universität Hannover, Institut für Theoretische Physik, Hannover, GERMANY; Universität Innsbruck, Institut für Theoretische Physik, Innsbruck, AUSTRIA; Österreichische Akademie der Wissenschaften, Institut für Quantenoptik und Quanteninformation, Innsbruck, AUSTRIA
Ulmer, Stefan; RIKEN, Ulmer Fundamental Symmetries Laboratory, Wako, JAPAN; Heinrich-Heine-Universität Düsseldorf, Lehrstuhl für Quantentechnologie und Fundamentalphysik, Düsseldorf, GERMANY
Ospelkaus, Christian; QUEST Institute for Experimental Quantum Metrology, PTB-Braunschweig; Leibniz Universität Hannover, Institut für Quantenoptik, Hannover, GERMANY
Quelle/Jahr
Quantum Science and Technology: 11
(2026), 3, 1
- 15
Sympathetic laser cooling is a key concept in precision spectroscopy and quantum state control of charged particles. Significant challenges arise in the metrologically relevant case where the effective interaction between the particles is weak and the particle to be cooled exhibits significant initial motional energy. Here we specifically address the most generally applicable case where the laser-cooled ion and the particle of interest are confined to two spatially separate potential wells with equal motional frequency for resonant enhancement of the cooling dynamics. We analyze the latter through numerical simulations and find that anharmonicities of the potential wells can prevent maintaining the resonance condition throughout the cooling process and thus inhibit a significant reduction in motional energy. We propose a cooling scheme that sweeps the trapping frequency of the potential wells. We show that this scheme enables efficient cooling from cryogenic temperatures all the way to the quantum regime of motion. As a specific application scenario, we analyze the sympathetic cooling of (anti-)protons into the quantum regime of motion for quantum logic spectroscopy-based tests of charge-parity-time invariance at the quantum limit in Penning traps. Nevertheless, our results and cooling strategies are generally applicable to other laser-inaccessible ion species.
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Open Access Hybrid
Rechteinformation
CC BY 4.0 ; Creative Commons Attribution 4.0 License
Themenbereich der Metrologie
Zeit und Frequenz
Innovationscluster
Quantentechnologie
Geschäftsfelder
Grundlagen der Metrologie
Forschungsprojekt
This work was supported by PTB, LUH, and DFG through the clusters of excellence QUEST and QuantumFrontiers as well as through the Collaborative Research Center SFB1227 (DQ-mat Project ID 274200144) and ERC StG "QLEDS". We also acknowledge financial support from the RIKEN Pioneering Project Funding and the MPG/RIKEN/PTB Center for Time, Constants and Fundamental Symmetries. JMC acknowledges the Grant ‘RYC2023-042535-I’ funded by MICIU/AEI/10.13039/501100011033 and by ‘ESF+’.
Zitierung
Poljakov, N., Schaper, J., Coenders, J.-A., Hoffmann, P. L., Cornejo, J. M., Hammerer, K., Ulmer, S., & Ospelkaus, C. (2026). A robust method to reach the motional quantum regime of (anti-)protons in cryogenic multi-Penning traps. Quantum Science and Technology, 11(3), 1–15. https://doi.org/10.1088/2058-9565/ae89df
