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Q: Fachverband Quantenoptik und Photonik

Q 15: Poster: Quantum Optics and Photonics I

Q 15.27: Poster

Montag, 23. März 2015, 17:00–19:00, C/Foyer

An experiment for long-range interacting fermionic gases in reduced dimensions — •Stephan Helmrich, Alda Arias, Nils Pehoviak, Christoph Schweiger, and Shannon Whitlock — Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg

We are building a new experiment for the quantum simulation of strongly-correlated fermionic systems with long-range interactions. To introduce and control the interactions we aim to optically admix a small Rydberg state component to the ground state of the atoms ("Rydberg dressing"). This would allow full control over the range and strength of the interactions, combined with long lifetimes of the atomic states.

We will use fermionic quantum gases of potassium-40 combined with high resolution fluorescence imaging of the individual atoms to directly measure spatial correlations. Our initial focus will be on realising exotic quantum phases in one-dimensional traps and at the crossover to two dimensions. Through complete access to the microscopic degrees of freedom, this experiment will allow for studies of quantum effects in complex many-body systems, including the role of entanglement near quantum phase transitions and the emergence of macroscopic effects such as superfluidity and quantum magnetism.