Stuttgart 2012 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster 2

Q 35.19: Poster

Wednesday, March 14, 2012, 16:30–19:00, Poster.I+II

2D discrete quantum simulators — •Stefan Brakhane, Anna Hambitzer, Andrea Alberti, Wolfgang Alt, and Dieter Meschede — Institut für Angewandte Physik der Universität Bonn,Wegelerstr. 8,53115 Bonn

In recent years atoms in 2D optical lattices have gained much interest for simulating complex physical phenomena from solid state physics. The detection and coherent manipulation of atoms have advanced to the point that individual atoms can be addressed with single lattice site resolution. By controlling the polarization of the laser beams forming a 1D optical lattice, spin-dependent transport has been utilized to realize discrete quantum walks [1].

We report on a novel set-up featuring state-dependent transport in a 2D optical lattice with single side detection and addressing. This will be used as a discrete quantum simulator to investigate new physics, such as Dirac points in the dispersion relation of 2D quantum walks, artificial gauge potentials, and quantum information processing based on a “one-way” quantum computer.
Karski et al. Quantum Walk in Position Space with Single Optically Trapped Atoms, Science 325, 174 (2009)