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arXiv:2208.06291

Observation of magnetic Feshbach resonances between Cs and ${}^{173}$Yb

Tobias Franzen, Alexander Guttridge, Kali Wilson, Segal, Jack, Matthew D. Frye, Jeremy M. Hutson, Simon L. Cornish

Published Aug 12, 2022• 0 citations
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Abstract

We report the first observation of magnetic Feshbach resonances between ${}^{173}$Yb and $^{133}$Cs. In a mixture of Cs atoms prepared in the $(f=3, m_f=3)$ state and unpolarized fermionic ${}^{173}$Yb we observe resonant atom loss due to two sets of magnetic Feshbach resonances around 622~G and 702~G. Resonances for individual Yb nuclear spin components $m_{i,\mathrm{Yb}}$ are split by its interaction with the Cs electronic spin, which also provides the main coupling mechanism for the observed resonances. The observed splittings and relative resonance strengths are in good agreement with theoretical predictions from coupled-channel calculations.

DOI
10.48550/arxiv.2208.06291

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We report the observation of magnetic Feshbach resonances between 173Yb^{173}\mathrm{Yb}173Yb and 133Cs^{133}\mathrm{Cs}133Cs. In a mixture of Cs atoms prepared in the (f=3,mf=3)(f=3,{m}_{f}=3)(f=3,mf​=3) state and unpolarized fermionic 173Yb^{173}\mathrm{Yb}173Yb, we observe resonant atom loss due to two sets of magnetic Feshbach resonances around 622 and 702 G. Resonances for individual Yb nuclear spin components mi,Yb{m}_{i,\mathrm{Yb}}mi,Yb​ are split by its interaction with the Cs electronic spin, which also provides the main coupling mechanism for the observed resonances. The observed splittings and relative resonance strengths are in good agreement with theoretical predictions from coupled-channel calculations.
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High partial-wave Feshbach resonances in an ultracold 6^66Li-133^{133}133Cs mixture
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