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A: Fachverband Atomphysik

A 41: Poster Session IIIa

A 41.12: Poster

Donnerstag, 8. März 2018, 16:15–18:15, Orangerie

Measurements of Motional Decoherence in 2D Ion Trap Arrays — •Sebastian Schnell, Frederick Hakelberg, Philip Kiefer, Jan-Philipp Schroeder, Mathias Wittemer, Govinda Clos, Ulrich Warring, and Tobias Schaetz — Atom-, Molekül- und optische Physik, Physikalisches Institut, Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg

Trapped ions present a promising system for quantum simulations [1]. In experiments with trapped ions motional coherence needs to be of an equal or larger time scale than typical experimental durations.
We investigate motional coherence times in a conventional Paul trap and a surface-electrode trap using different methods. We present experimental results for variable montional frequencies and excitation amplitudes from single quantum |α₀|² ∝ 1-10 to |α₀|² ∝ 10³. We further investigate real time manipulation of control potentials used for tuning of motional mode orientation and frequency [2].

[1] T. Schaetz, New J. Phys. 15, 085009 (2013)

[2] M. Mielenz et al., Nature Communications 7, 11839 (2016)