Berlin 2014 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 34: Poster: Ultra-cold atoms, ions and BEC (with Q)

A 34.2: Poster

Mittwoch, 19. März 2014, 16:30–18:30, Spree-Palais

Trapping Ions in a triangular microstructured surface trap — •Henning Kalis, Manuel Mielenz, Ulrich Warring, and Tobias Schaetz — Physikalisches Institut, Albert-Ludwigs Universität Freiburg

Many quantum systems, that may offer a variety of exotic behaviour are not fully accessible by classical simulations. One approach to overcome this difficulty could be to implement these quantum systems directly and in a well controllable quantum simulator, as proposed by R. Feynman [1]. Geometrical frustration has turned out to be a mechanism for inducing such exotic quantum disordered phases. As a starting point for quantum simulations of these systems we chose the most basic geometry that exhibits frustration, an equilateral triangle. However high-fidelity quantum control of such systems is obligatory and has been demonstrated in linear Paul-Traps (e.g. the quantum simulation of the 1D transverse-field Ising-Model [2,3]). Though high operational fidelity exceeding 99% is currently still restricted to a very limited number of constituents. A promising bottom-up approach for scaling the trapped ion system in size and dimension is based on radio-frequency surface-electrode traps [4], spanning arrays of individual rf-traps with a spacing of 40 micrometer. These surface-electrode traps may thus extend the control to 2D arrays of individual traps (lattices) enabling, in principle, the simulation of 2D Hamiltonians [5]. We will characterize our trapping setup (in collaboration with NIST, Sandia and R.Schmied) and report on the recent experimental results in our triangular trap.