Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 26: Poster Session II

A 26.10: Poster

Mittwoch, 8. März 2017, 17:00–19:00, P OG1

Structural Defects in Anharmonic Trapping Potentials — •Philip Kiefer¹, Jonathan Brox¹, Miriam Bujak¹, Frederick Hakelberg¹, Leonard Nitzsche¹, Henning Kalis¹, Ulrich Warring¹, Haggai Landa², and Tobias Schaetz¹ — ¹Atom-, Molekül- und optische Physik, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg — ²LPTMS, Université Paris Sud, Orsay, France

We study topological defects [1], so called kinks, in Coulomb crystals consisting of Mg-Ions. We demonstrate that the appearance of such defects, as well as the normal mode spectrum of the crystal and escape directionalities depend on the trap potential. Depending on defect type and anharmonic contributions to the trap potential, the defects get a preferred escape direction [2].
Linear surface electrode traps offer one possibility to control the trapping potential up to higher orders. We present numerical calculated control potentials, that are modifiable on relevant time scales of the crystal. This system offers a promising platform to further study and exploit the properties of such topological defects.

[1] Ch. Schneider et al., Rep. Prog. Phys. 75, 024401 (2012)

[2] J. Brox et al., publication in preparation