Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 32: Ultra-cold atoms, ions and BEC III (with Q)
A 32.1: Vortrag
Donnerstag, 3. März 2016, 11:00–11:15, f107
Toolbox for tunable ion-ion interactions in a 2D surface trap — •Henning Kalis, Frederick Hakelberg, Matthias Wittemer, Manuel Mielenz, Ulrich Warring, and Tobias Schaetz — Physikalisches Institut, Albert-Ludwigs-Universität Freiburg
Geometrical frustration has turned out to be a machanism for inducing exotic quantum disordered phases [1], whose dynamics can not be adressed efficiently on classical computers. To get around this difficulty we follow Feynman‘s approach of quantum simulations [2]. We chose a bottom up approach based on trapped 25Mg+ ions [3]. Static and real-time control of the motional degrees of freedom has been demonstrated in a triangular surface trap with 80 µm inter-ion distance [4].
In our setup we have three dictinct trap sites seperated by 40 µm, aranged in an equilateral triangle.
We report on different techniques for analysis of the motional mode orientations, that represent the key ingredient for a tunable ion-ion interaction.
[1] Moessner, R. & Sondhi, S. L, Phys. Rev. B 63, 224401 (2001).
[2] R.P. Feynman, Int. J. Theor. Phys., VoL 21, Nos. 6/7, (1982).
[3] Schaetz et al., New J. Phys. 15, 085009 (2013).
[4] Mielenz et. al., In Preperation