Erlangen 2018 – scientific programme

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A: Fachverband Atomphysik

A 26: Ultracold Plasmas and Rydberg systems (joint session A/Q)

A 26.6: Talk

Wednesday, March 7, 2018, 15:15–15:30, K 0.011

Experimental realization of an Optical Feshbach resonance using ultra-long range Rydberg molecules — •Oliver Thomas^1,2, Carsten Lippe¹, Tanita Eichert¹, and Herwig Ott¹ — ¹Department of Physics and research center OPTIMAS, University of Kaiserslautern, Germany — ²Graduate School Materials Science in Mainz, Gottlieb-Daimler-Strasse 47, 67663 Kaiserslautern, Germany

Over the last decades Feshbach resonances in ultra cold atomic gases have lead to some of the most important advances in atomic physics. Not only did they enable ground breaking work in the BEC-BCS crossover regime, but they are also a widely used tool for the association of ultra cold molecules. Leading to the observation of the first molecular Bose-Einstein Condensates and the emergence of ultra cold dipolar molecular systems. We show the experimental realization of optical Feshbach resonances using ultra-long range Rydberg molecules and demonstrate their practical use by tuning the revival time of a quantum many-body system quenched into a deep optical lattice. We believe this opens up a complete new field of Feshbach resonances as ultra-long range Rydberg molecules have a plenitude of available resonances for nearly all atomic species.