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Q: Fachverband Quantenoptik und Photonik

Q 17: Quantum gases (Bosons) III

Q 17.2: Vortrag

Dienstag, 10. März 2020, 14:15–14:30, e214

Bragg scattering of ultracold erbium atoms off a standing wave tuned to near a narrow-line transition — •Roberto Röll, David Helten, Daniel Babik, and Martin Weitz — Institut für Angewandte Physik, Universität Bonn, Deutschland

We report on the status of an ongoing experiment aiming at investigating the fractional quantum Hall effect with ultracold bosonic erbium atoms by phase imprinting via position dependent optical Raman manipulation. In recent work, we have observed Bragg scattering of an atomic erbium Bose-Einstein condensate off a standing wave tuned into the vicinity of the J=6→ J′=7 narrow-line transition (8 kHz natural linewidth) of the erbium atoms near 841 nm wavelength. Despite the small linewidth of this transition, a clear Bragg diffraction signal of the rare earth atoms is experimentally observed. Both current experimental work as well as future plans will be reported.