학술논문
Orders of Magnitude Improved Cyclotron-Mode Cooling for Non-Destructive Spin Quantum Transition Spectroscopy with Single Trapped Antiprotons
Document Type
Working Paper
Author
Latacz, B. M.; Fleck, M.; Jaeger, 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.; Soter, A.; Quint, W.; Walz, J.; Yamazaki, Y.; Smorra, C.; Ulmer, S.
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Abstract
We demonstrate efficient sub-thermal cooling of the modified cyclotron mode of a single trapped antiproton and reach particle temperatures $T_+=E_+/k_\text{B}$ below $200\,$mK in preparation times shorter than $500\,$s. This corresponds to the fastest resistive single-particle cyclotron cooling to sub-thermal temperatures ever demonstrated. By cooling trapped particles to such low energies, we demonstrate the detection of antiproton spin transitions with an error-rate $<0.000025$, more than three orders of magnitude better than in previous best experiments. This method will have enormous impact on multi-Penning-trap experiments that measure magnetic moments with single nuclear spins for tests of matter/antimatter symmetry, high-precision mass-spectrometry, and measurements of electron $g$-factors bound to highly-charged ions that test quantum electrodynamics.