Abstract
We report on the first detailed study of motional heating in a cryogenic Penning trap using a single antiproton. Employing the continuous Stern-Gerlach effect we observe cyclotron quantum transition rates of 6(1) quanta/h and an electric-field noise spectral density below 7.5(3.4)×10^{-20} V^{2} m^{-2} Hz^{-1}, which corresponds to a scaled noise spectral density below 8.8(4.0)×10^{-12} V^{2} m^{-2}, results which are more than 2 orders of magnitude smaller than those reported by other ion-trap experiments.
Highlights
We report on the first detailed study of motional heating in a cryogenic Penning trap using a single antiproton
Employing the continuous Stern-Gerlach effect we observe cyclotron quantum transition rates of 6ð1Þ quanta=h and an electric-field noise spectral density below 7.5ð3.4Þ × 10−20 V2 m−2 Hz−1, which corresponds to a scaled noise spectral density below 8.8ð4.0Þ × 10−12 V2 m−2, results which are more than 2 orders of magnitude smaller than those reported by other ion-trap experiments
The most precise values of the mass of the electron [8] and the most stringent tests of bound-state quantum electrodynamics [9] are based on precise frequency measurements on highly charged ions in Penning traps
Summary
We report on the first detailed study of motional heating in a cryogenic Penning trap using a single antiproton. Measurement of Ultralow Heating Rates of a Single Antiproton in a Cryogenic Penning Trap
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