Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 51: Ultracold Atoms I
Q 51.1: Gruppenbericht
Donnerstag, 9. März 2017, 14:30–15:00, P 104
Optical traps for single ions and Coulomb crystals — •Leon Karpa, Julian Schmidt, Alexander Lambrecht, Pascal Weckesser, Yannick Minet, Fabian Thielemann, Markus Debatin, and Tobias Schaetz — Physikalisches Institut, Albert-Ludwigs Universität Freiburg, Germany
We demonstrate optical trapping of 138Ba+ ions without residual rf-confinement for durations of up to 3 s, an improvement in lifetime by 3 orders of magnitude compared to recent experiments 1,2 . With the trapping probability approaching unity for durations of 100 ms combined with low heating and electronic decoherence rates our results establish optical ion trapping as a novel and robust tool for the manipulation of cold trapped ions, e.g. in atom-ion interaction experiments3 .
The presented approach can also be applied for all-optical trapping of Coulomb crystals which we demonstrate by spectroscopy of a crystal excited within the optical trap. We discuss possible applications of our results in the fields of ultracold chemistry and structural quantum phase transitions.
1 C. Schneider, M. Enderlein, T. Huber and T. Schaetz, Nat. Photon. 4, 772 (2010)
2 Huber, A. Lambrecht, J. Schmidt, L. Karpa and T. Schaetz, Nat. Commun. 5, 5587 (2014)
3 see e.g.: A. Grier, M. Cetina, F. Orucevic, and V. Vuletic, PRL 102, 223201 (2009)