Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 37: Ultracold Plasmas and Rydberg Systems
Q 37.2: Vortrag
Mittwoch, 8. März 2017, 15:00–15:15, P 104
Towards a strongly interacting gas of cold strontium Rydberg atoms — Ingo Nosske1, Luc Couturier1, Chang Qiao1, Fachao Hu1, •Jan Blume1,2, Canzhu Tan1, Peng Chen1, Yuhai Jiang1,3, and Matthias Weidemüller1,2 — 1University of Science and Technology of China, Shanghai Institute for Advanced Studies, Xiupu Road 99, 201315 Shanghai, China — 2Physikalisches Institut, Universität Heidelberg, Germany — 3Shanghai Advanced Research Institute, Chinese Academy of Sciences,
We aim to create a gas of ultracold strontium Rydberg atoms. Our laser cooling strategy, with the goal of reaching temperatures and densities close to quantum degeneracy [1], involves a side-loaded 2D MOT followed by 3D broad-band and narrow-band MOTs. The strontium atoms will be excited to triplet Rydberg states via a narrow singlet-triplet intercombination line.
Here we present our latest experimental progress including the realization of our strontium 2D MOT, as well as a characterization of the locking scheme of our cooling laser which addresses the broad 5s2 1S0 − 5s5p 1P1 transition of strontium at 461 nm. The locking scheme is based on a commercial wavelength meter (HighFinesse WSU10) with which an absolute frequency stability of a few MHz has been achieved.
Simon Stellmer, Rudolf Grimm, and Florian Schreck. "Production of quantum-degenerate strontium
gases." Physical Review A 87.1 (2013): 013611.9.5 571-586 (2014)