Dynamics of a degenerate Cs-Yb mixture with attractive interspecies interactions [dataset]

Proukakis, Nick (Newcastle University, UK); Thomas Billam (Newcastle University, UK); Guttridge, Alex (Durham University, UK); Parker, Nick (Newcastle University, UK); Liu, I-Kang (Newcastle University, UK); Cornish, Simon (Durham University, UK); Wilson, Kali (Durham University, UK); Segal, Jack (Durham University, UK)

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Dynamics of a degenerate Cs-Yb mixture with attractive interspecies interactions [dataset] Open Access

We probe the collective dynamics of a quantum degenerate Bose-Bose mixture of $^{133}$Cs and $^{174}$Yb with attractive interspecies interactions. Specifically, we excite vertical center of mass oscillations of the Cs condensate. We observe significant damping for the Cs dipole mode, due to the rapid transfer of energy to the larger Yb component and the ensuing acoustic dissipation. Numerical simulations based on coupled Gross-Pitaevskii equations provide excellent agreement with experiment, and additionally reveal the possibility of late-time revivals (beating) which are found to be highly sensitive to the Cs and Yb atom number combinations. By further tuning the interaction strength of Cs using a broad Feshbach resonance, we explore the stability of the degenerate mixture. We observe collapse of the Cs condensate mediated by the attractive Cs-Yb interaction when $a_{\rm{Cs}}<50 \, a_0$, well above the single-species collapse threshold, in good agreement with simulations.

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Resource type: Dataset
Contributors: Creator: Wilson, Kali ¹
Creator: Guttridge, Alex ¹
Creator: Liu, I-Kang ²
Creator: Segal, Jack ¹
Creator: Thomas Billam ²
Creator: Parker, Nick ²
Creator: Proukakis, Nick ²
Creator: Cornish, Simon ¹

¹ Durham University, UK
² Newcastle University, UK
Funder: Engineering and Physical Sciences Research Council
Research methods
Other description: Data files used in "Dynamics of a degenerate Cs-Yb mixture with attractive interspecies interactions". For more information refer to the README.txt file included in data zip file.
Keyword: Ultracold atoms
Atomic Physics
Bose-Einstein condensates
Quantum mixtures
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Location
Language
Cited in: arxiv:2012.11008
Identifier: ark:/32150/r2bk128991d
doi:10.15128/r2bk128991d
Rights: Creative Commons Attribution 4.0 International (CC BY)
Publisher: Durham University
Date Created

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Depositor: K.E. Wilson
Date Uploaded: 14 July 2021, 07:07:48
Date Modified: 15 July 2021, 09:07:02
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File size: 386274540

Last modified: 2021:07:14 12:12:17+01:00

Filename: CsYb_Data_Publish.zip

Original checksum: 7c39adfc6a71189fd900b2260724071e

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