Orders of Magnitude Improved Cyclotron-Mode Cooling for Nondestructive Spin 
Quantum Transition Spectroscopy with Single Trapped Antiprotons

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

doi:10.1103/PhysRevLett.133.053201

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Orders of Magnitude Improved Cyclotron-Mode Cooling for Nondestructive Spin Quantum Transition Spectroscopy with Single Trapped Antiprotons

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Jäger, J. I.
Division Prof. Dr. Klaus Blaum, 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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Erlewein, S. R.
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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Wiesinger, M.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Will, C.
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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Mooser, A.
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.133.053201
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Citation

BASE Collaboration, Latacz, B. M., Fleck, M., Jäger, J. I., Umbrazunas, G., Arndt, B. P., et al. (2024). Orders of Magnitude Improved Cyclotron-Mode Cooling for Nondestructive Spin Quantum Transition Spectroscopy with Single Trapped Antiprotons. Physical Review Letters, 133(5): 053201. doi:10.1103/PhysRevLett.133.053201.

Cite as: https://hdl.handle.net/21.11116/0000-000F-A7A3-C

Abstract

We demonstrate efficient subthermal cooling of the modified cyclotron mode of a single trapped antiproton and reach particle temperatures T₊=E₊/k_B below 200 mK in preparation times shorter than 500s. This corresponds to the fastest resistive single-particle cyclotron cooling to subthermal temperatures ever demonstrated. By cooling trapped particles to such low energies, we demonstrate the detection of antiproton spin transitions with an error rate <0.000 023, more than 3 orders of magnitude better than in previous best experiments. This method has enormous impact on multi-Penning-trap experiments that measure magnetic moments with single nuclear spins for tests of matter and antimatter symmetry, high-precision mass spectrometry, and measurements of electron g factors bound to highly charged ions that test quantum electrodynamics and establish standards for magnetometry.