2017/03/17 by C. Smorra, A. Mooser, M. Besirli +19
Physics and Astronomy · #Antiproton #Atomic and Subatomic Physics Research #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Electron #Initialization #Mechanical and Optical Resonators #Nuclear physics #Penning trap #Physics #Proton #Spin (aerodynamics) #physics.atom-ph
paper · pdf · doi:10.1016/j.physletb.2017.03.024
published as Physics Letters B 769, 1-6 (2017)
openalex publication_date 2017/03/17 · arxiv created 2017/03/21 · arxiv updated 2017/03/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report on the detection of individual spin quantum transitions of a single trapped antiproton in a Penning trap . The spin-state determination, which is based on the unambiguous detection of axial frequency shifts in presence of a strong magnetic bottle, reaches a fidelity of 92.1 % . Spin-state initialization with > 99.9 % fidelity and an average initialization time of 24 min are demonstrated. This is a major step towards an antiproton magnetic moment measurement with a relative uncertainty on the part-per-billion level.