20-25 October 2019
Europe/Zurich timezone

Towards quantum logic inspired techniques for tests of discrete symmetries with (anti-)protons

22 Oct 2019, 17:23
WHGA/001 - Auditorium (PSI)

WHGA/001 - Auditorium



J. M. Cornejo (Leibniz Universität Hannover)


We present an experimental approach based on quantum logic inspired cooling and readout techniques to contribute to CPT tests in the baryonic sector. Within the BASE collaboration [1], these techniques would allow to cool single (anti-)protons to sub-Doppler temperatures by means of coupling to a laser-cooled beryllium ion [2, 3]. For this purpose, both ions will be co-trapped in an advanced cryogenic Penning trap system using an engineered double-well potential [4]. In addition, these techniques will lead to faster g-factor measurements of the (anti-)proton, resulting in better statistics and enabling proton-antiproton comparisons within daily sidereal timescales. In this contribution, we will show the current status of the project emphasizing the latest results on Doppler cooling of $^{9}$Be$^{+}$ ions as well as the latest modifications of the cryogenic Penning trap system.

[1] C. Smorra et al., Eur. Phys. J. Special Topics 224, 3055 (2015)
[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)
[4] M. Niemann et al., arXiv: 1906.09249 [physics.atom-ph] (2019)

Primary author

J. M. Cornejo (Leibniz Universität Hannover)


M. Niemann (Leibniz Universität Hannover) T. Meiners (Leibniz Universität Hannover) J. Mielke (Leibniz Universität Hannover) J. Pick (Leibniz Universität Hannover) M. J. Borchert (Leibniz Universität Hannover and RIKEN) A. Bautista-Salvador (Leibniz Universität Hannover and PTB, Braunschweig) S. Ulmer (RIKEN) C. Ospelkaus (Leibniz Universität Hannover and PTB, Braunschweig)

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