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A: Fachverband Atomphysik
A 26: Poster Session II
A 26.10: Poster
Wednesday, March 8, 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