Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 27: Poster: Quantum Optics and Photonics II
Q 27.50: Poster
Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof
Ion Coulomb crystals in scalable ion traps for precision spectroscopy — •Jan Kiethe, Dimitri Kalincev, Jonas Keller, Tobias Burgermeister, and Tanja E. Mehlstäubler — Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
We report on progress towards a multi-ion clock based on In+/Yb+ ion Coulomb crystals, stored in a segmented linear Paul trap. In our currently operational prototype trap we characterized systematic shifts due to micromotion[1] and excess heating rates at the level of fractional frequency shifts of 10−19 and below. A heating rate of 1.4 phonons per second at 500 kHz was observed.
A next generation ion trap based on aluminum nitride ceramics, was tested at the CMI in Prague. The warming of the trap was measured to be 2 K at operational conditions, in agreement with simulations[2].
The well-controlled Coulomb crystals in our setup are also used to study many-body physics of strongly interacting systems. In particular, we investigate the dynamics of solitons in two-dimensional ion Coulomb crystals.
[1] Keller et al., J. Appl. Phys. 118, 104501 (2015)
[2] Dolezal et al., Metrologia 52, 842 (2015)