Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 11: Quantum Gases: Fermions II

Q 11.7: Vortrag

Montag, 23. März 2015, 16:15–16:30, K/HS2

A quantum simulator for molecules: Imaging molecular orbitals and electronic dynamics with ultracold atoms — •Dirk-Sören Lühmann, Christof Weitenberg, and Klaus Sengstock — Institut für Laserphysik, Universität Hamburg, Germany

In the recent years, ultracold atoms in optical lattices have proven their great value as quantum simulators for studying strongly-correlated phases and complex phenomena in solid-state systems. Here, we reveal their potential as quantum simulators for molecules and propose a technique to image the three-dimensional molecular orbitals with high resolution. The outstanding tunability of ultracold atoms in terms of potential and interaction offer fully-adjustable model systems for gaining deep insight into the electronic structure of molecules. We study the orbitals of an artificial benzene molecule and discuss the effect of tunable interactions in its conjugated π electron system with special regard to localization and spin order. The dynamical timescale of ultracold atom simulators are on the order milliseconds which allow for the time-resolved monitoring of a broad range of dynamical processes. As an example, we compute the intercombination dynamics in the conjugated π system of the artificial benzene molecule.