Rostock 2019 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 12: Ultra-cold atoms, ions and BEC

A 12.13: Poster

Dienstag, 12. März 2019, 16:30–18:30, S Fobau Physik

Quantum simulation of dynamical gauge fields: Experimental approach — •Apoorva Hegde, Alexander Mil, Andy Xia, Fabian Olivares, Markus Oberthaler, and Fred Jendrzejewski — Kirchhoff Institute of Physics, Im Neuenheimer Feld 227, 69120 Heidelberg

Gauge theories are the fundamental aspects of the Standard Model of High Energy Physics. They are essential for the description of the dynamics between the matter particles, the fermions and the force carriers, the bosons with which the gauge fields are associated. Here we discuss experimental methods to simulate these dynamic gauge fields using an ultracold mixture of sodium and lithium atoms, following the proposals by Kasper and Zache [1, 2]. In this approach, we use an optical lattice structure with alternatingly populated sites of sodium and lithium. The fermionic matter field is described by the lithium atoms whereas the bosonic gauge field is described by the sodium atoms. The gauge coupling is engineered by interspecies spin changing collision between sodium and lithium. Importantly this interaction locally conserves angular momentum therefore satisfying Gauss' law. In this poster, I will present our progress towards the realization of simple lattice gauge theories within ultracold atomic gases.

[1] Kasper et al. NJP 19, 023030 (2017).

[2] Zache et al. Quantum Sci. Technol. 3, 034010 (2018).