Image-Current Mediated Sympathetic Laser Cooling of a Single Proton in a 
Penning Trap Down to 170 mK Axial Temperature

BASE Collaboration; Will, C.; Wiesinger, M.; Micke, P.; Yildiz, H.; Driscoll , T.; Kommu, S.; Abbass, F.; Arndt, B. P.; Bauer, B. B.; Erlewein, S.; Fleck, M.; Jäger, J. I.; Latacz, B. M.; Mooser, A.; Schweitzer, D.; Umbrazunas, G.; Wursten, E.; Blaum, K.; Devlin, J. A.; Ospelkaus, C.; Quint, W.; Soter, A.; Walz, J.; Smorra, C.; Ulmer, S.

doi:10.1103/PhysRevLett.133.023002

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Image-Current Mediated Sympathetic Laser Cooling of a Single Proton in a Penning Trap Down to 170 mK Axial Temperature

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Will, C.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Wiesinger, M.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Micke, P.
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Arndt, B. P.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Jäger, J. I.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Mooser, A.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Blaum, K.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.133.023002
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Citation

BASE Collaboration, Will, C., Wiesinger, M., Micke, P., Yildiz, H., Driscoll, T., et al. (2024). Image-Current Mediated Sympathetic Laser Cooling of a Single Proton in a Penning Trap Down to 170 mK Axial Temperature. Physical Review Letters, 133(2): 023002. doi:10.1103/PhysRevLett.133.023002.

Cite as: https://hdl.handle.net/21.11116/0000-000F-A2CD-3

Abstract

We demonstrate a new temperature record for image-current mediated sympathetic cooling of a single proton in a cryogenic Penning trap by laser-cooled ⁹Be⁺. An axial mode temperature of 170 mK is reached, which is a 15-fold improvement compared to the previous best value. Our cooling technique is applicable to any charged particle, so that the measurements presented here constitute a milestone toward the next generation of high-precision Penning-trap measurements with exotic particles.