title: Observation of spin flips with a single trapped proton.
abstract: Radio-frequency induced spin transitions of one individual proton are observed. The spin quantum jumps are detected via the continuous Stern-Gerlach effect, which is used in an experiment with a single proton stored in a cryogenic Penning trap. This is an important milestone towards a direct high-precision measurement of the magnetic moment of the proton and a new test of the matter-antimatter symmetry in the baryon sector.
authors.affiliation: Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany. bap7@ee.duke.edu
authors.forename: S
authors.initials: S
authors.lastname: Ulmer
authors.forename: C C
authors.initials: CC
authors.lastname: Rodegheri
authors.forename: K
authors.initials: K
authors.lastname: Blaum
authors.forename: H
authors.initials: H
authors.lastname: Kracke
authors.forename: A
authors.initials: A
authors.lastname: Mooser
authors.forename: W
authors.initials: W
authors.lastname: Quint
authors.forename: J
authors.initials: J
authors.lastname: Walz