Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster I

Q 35.18: Poster

Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof

Towards quantum simulation of spin-ice dynamics — •Henning Kalis, Miriam Bujak, Manuel Mielenz, Ulrich Warring, and Tobias Schaetz — Albert-Ludwigs-Universität Freiburg, Physikalisches Institut, Hermann-Herder-Strasse 3, 79104 Freiburg, Germany

Geometrically frustrated systems exhibit a residual entropy due to their exponentially large number of degenerate classical groundstates. In analogy to the proton-disorder in commom water ice they are called spin-ice-systems, e.g. the triangular Ising-Model with nearest neighbor antiferromeagnetic exchange interactions. Although spin-ice systems are of interest for many years [1] little is known about the microscopic mechanisms governing their physics.
High fidelity quantum control of multiple spin systems have been implemented [2] with ions in linear Paul traps (e.g. quantum simulation of Ising-Models [3]). A novel type of surface electrode trap [4] may extend this degree of control to two dimensional trap arrays (lattices) and therefore we may gain insight of the microscopic dynamics of spin-ice systems.
We introduce the surface trap geometry and report on the current status of the experiment.

[1] G.H. Wannier, Phys. Rev. 79, 357 (1950)

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

[3] A. Friedenauer et al., Nature Physics 4, 757 - 761 (2008)

[4] R. Schmied et al., PRL 102, 233002 (2009)