Berlin 2014 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
A: Fachverband Atomphysik
A 34: Poster: Ultra-cold atoms, ions and BEC (with Q)
A 34.23: Poster
Wednesday, March 19, 2014, 16:30–18:30, Spree-Palais
Artificial gauge fields in a driven optical lattice — •Malte Weinberg1, Christoph Ölschläger1, Julian Struck1, Juliette Simonet1, Patrick Windpassinger2, and Klaus Sengstock1 — 1Institut für Laserphysik, Universität Hamburg, Germany — 2Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
Atomic quantum gases are neutral, and therefore, not affected by external electromagnetic fields in the way electrons are. This constitutes a central issue towards the quantum simulation of solid state models involving an external magnetic field, e.g. the Quantum Spin Hall Effect. Therefore the experimental realization of artificial gauge fields in ultracold atomic systems shall put through quantum simulators of new kinds of exotic quantum matter.
In this perspective, driven optical lattices constitute a versatile tool, which allows controlling both phase and amplitude of the complex tunneling parameters and, thus, generating artificial gauge potentials [1]. By expanding this concept to a triangular lattice structure, it is possible to realize gauge invariant and fully tunable artificial magnetic fluxes that exhibit a staggered ordering [2].
[1] J. Struck et al., Phys. Rev. Lett. 108, 225304 (2012)
[2] J. Struck et al., Nat. Phys. 9, 738-743 (2013)