Observation of Spin Flips with a Single Trapped Proton

2; 2); (2) Institut fuer Physik; 3); (3) Ruprecht Karls-Universitaet Heidelberg; 4); 4) ((1) Max-Planck-Institut fuer Kernphysik; (4) Helmholtz Institut Mainz; 5); (5) GSI - Helmholtzzentrum fuer Schwerionenforschung

arxiv: 1104.1206 · v2 · pith:YX3FRXRMnew · submitted 2011-04-06 · ⚛️ physics.atom-ph

Observation of Spin Flips with a Single Trapped Proton

S. Ulmer (1 , 2 , 3) , C.C. Rodegheri (1 , 2) , K. Blaum (1 , H. Kracke (2 , 4)

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A. Mooser (2 W. Quint (3 5) J. Walz (2 4) ((1) Max-Planck-Institut fuer Kernphysik Germany (2) Institut fuer Physik Johannes Gutenberg-Universitaet (3) Ruprecht Karls-Universitaet Heidelberg (4) Helmholtz Institut Mainz (5) GSI - Helmholtzzentrum fuer Schwerionenforschung Germany)

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classification ⚛️ physics.atom-ph

keywords protonspinsinglebaryoncontinuouscryogenicdetecteddirect

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Radio-frequency induced spin transitions of one individual proton are observed for the first time. 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.

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Observation of Spin Flips with a Single Trapped Proton

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