Erlangen 2018 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 51: Poster: Quantum Optics and Photonics IV

Q 51.12: Poster

Wednesday, March 7, 2018, 16:15–18:15, Redoutensaal

Dissipation-induced steady states in Rydberg-dressed quantum gases in an optical lattice — •Mathieu Barbier, Andreas Geißler, and Walter Hofstetter — Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität Frankfurt am Main

In recent years, research on quantum gases trapped in optical lattices has flourished impressively and the addition of Rydberg excitations to such systems promises to lead to exotic phases. Alongside the insulating density waves with crystalline order and superfluids, intriguing quantum phases referred to as supersolids have been predicted. Those phases are characterized by a spatially modulated condensate, combining the long-range spatial order of solids and the superfluid flow of condensates.

We focus on the realization of various quantum phases of a bosonic Rydberg-dressed gas, trapped in an optical lattice. Using the master equation in Lindblad form within the Gutzwiller theory and its approximations, we enrich the system with realistic dissipative mechanisms in order to closely model the experiment. We let the non-dissipative ground states evolve and observe the influence of dissipation. Are stable supersolids attainable in experiments or do dissipative processes prevent their existence?