Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 50: Kalte Atome: Manipulation und Detektion

Q 50.8: Vortrag

Donnerstag, 15. März 2012, 15:45–16:00, V7.03

Formation of helical ion chains — •Ramil Nigmatullin1,2, Adolfo del Campo3, Gabriele de Chiara4,5, Giovanna Morigi6, Martin Plenio1,2, and Alex Retzker11Ulm University, Ulm, Germany — 2Imperial College London, London, UK — 3Los Alamos National Laboratory, Los Alamos, USA — 4Universitat Autonoma de Barcelona, Barcelona, Spain — 5Queen's University Belfast, Belfast, UK — 6University of Saarlandes, Saarbruecken

We study the formation of helices in the structural phase transition of linear Wigner crystals to zigzag Wigner crystals. Wigner crystals are confined radially by a harmonic potential and with periodic boundary conditions in the axial direction, which in principle can be realized experimentally using ring ion traps. Molecular dynamics simulations are used to show that the dependence of the average winding number of the helix is consistent with the prediction of the Kibble-Zurek mechanism.

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