Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 26: SYRA: Ultracold Rydberg Atoms and Molecules 2

Q 26.4: Vortrag

Dienstag, 13. März 2012, 15:15–15:30, V47.01

Supersymmetry in Rydberg-dressed lattice fermions — •Hendrik Weimer1, Liza Huijse1, Alexey Gorshkov2, Guido Pupillo3, Peter Zoller4, Mikhail Lukin1, and Eugene Demler11Physics Department, Harvard University, Cambridge, MA, USA — 2IQI, Caltech, Pasadena, CA, USA — 3University of Strasbourg, Strasbourg, France — 4University of Innsbruck and IQOQI, Innsbruck, Austria

Supersymmetry is a powerful tool that allows the characterization of strongly correlated many-body systems, in particular in the case of supersymmetric extensions of the fermionic Hubbard model [1]. At the same time, these models can exhibit rich and exotic physics on their own, such as flat bands with a vanishing dispersion relation. We show that such lattice models can be realized with Rydberg-dressed fermions in optical lattices. Strong interactions within the ground state manifold of the atoms can be realized by admixing a weak contribution of a highly excited Rydberg state [2]. We discuss the unique possbilities of ultracold atoms for the detection of supersymmetry and the effects of tuning the system away from the supersymmetric point.

[1] P. Fendley, K. Schoutens, J. de Boer, PRL 90, 120402 (2003).
[2] J. Honer, H. Weimer, T. Pfau, H. P. Büchler, PRL 105, 160404 (2010).

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