Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 18: Precision Spectroscopy of atoms and ions III (joint session A/Q)
Q 18.4: Vortrag
Montag, 11. März 2019, 17:15–17:30, S HS 2 Physik
Experimental setup for sympathetic laser cooling of single atomic ions and protons in a Penning trap — •Juan M. Cornejo1, Johannes Mielke1, Teresa Meiners1, Malte Niemann1, Nicolás Pulido1, Jonathan Morgner1, Matthias Borchert1,3, Amado Bautista-Salvador2,1, Stefan Ulmer3, and Christian Ospelkaus1,2 — 1Institut für Quantenoptik, Leibniz Universität Hannover — 2Physikalisch-Technische Bundesanstalt, Braunschweig — 3Ulmer Fundamental Symmetries Laboratory, RIKEN
High-precision measurements of the (anti-)proton g-factor provide a stringent test of CPT invariance in the baryonic sector [1]. However, current cooling and state detection schemes are highly sensitive on the motional energy of the particles. For faster cooling to mK temperatures and efficient detection, we pursue an approach where a single, well-controlled atomic ion serves as a link to manipulate and detect the motional and spin state of a single (anti-)proton [2, 3].
An overview of the experimental setup including a cryogenic Penning trap stack for first demonstrations of the motional coupling between two 9Be+ ions in a double well potential is given. We report on the latest progress regarding trapping, manipulation and detection of the atomic ion. Prospects for proton loading and a micro-coupling trap are discussed.
[1] C. Smorra et al., Nature 550, 371-374 (2017)
[2] D. J. Heinzen and D. J. Wineland, Phys. Rev. A 42, 2977 (1990)
[3] D. J. Wineland et al., J. Res. NIST, 103, 259-328 (1998)