Observation of individual spin quantum transitions of a single antiproton

Autor: Smorra, C., Mooser, A., Besirli, M., Bohman, M., Borchert, M. J., Harrington, J., Higuchi, T., Nagahama, H., Schneider, G. L., Sellner, S., Tanaka, T., Blaum, K., Matsuda, Y., Ospelkaus, C., Quint, W., Walz, J., Yamazaki, Y., Ulmer, S.
Rok vydání: 2017
Předmět:
Zdroj: Physics Letters B 769, 1-6 (2017)
Druh dokumentu: Working Paper
DOI: 10.1016/j.physletb.2017.03.024
Popis: 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.
Databáze: arXiv