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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.

Descriptions

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
Subject
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

File Details

Depositor
K.E. Wilson
Date Uploaded
Date Modified
15 July 2021, 09:07:02
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Characterization
File format: zip (ZIP Format)
Mime type: application/zip
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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User N. Syrotiuk has updated Dynamics of a degenerate Cs-Yb mixture with attractive interspecies interactions [dataset] 2 months ago
User N. Syrotiuk has updated Dynamics of a degenerate Cs-Yb mixture with attractive interspecies interactions [dataset] 2 months ago