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Quantum degenerate mixtures of Cs and Yb [dataset] Open Access

We report the production of quantum degenerate Bose-Bose mixtures of Cs and Yb with both attractive (Cs + $^{174}$Yb) and repulsive (Cs + $^{170}$Yb) interspecies interactions. Dual-species evaporation is performed in a bichromatic optical dipole trap that combines light at 1070\,nm and 532\,nm to enable control of the relative trap depths for Cs and Yb. Maintaining a trap which is shallower for Yb throughout the evaporation leads to highly efficient sympathetic cooling of Cs for both isotopic combinations at magnetic fields close to the Efimov minimum in the Cs three-body recombination rate at around 22\,G. For Cs + $^{174}$Yb, we produce quantum mixtures with typical atom numbers of $N_\mathrm{Yb} \sim 5 \times 10^4$ and $N_\mathrm{Cs} \sim 5 \times 10^3$. We find that the attractive interspecies interaction (characterised by the scattering length $a_\mathrm{CsYb} = -75\,a_0$) is stabilised by the repulsive intraspecies interactions. For Cs + $^{170}$Yb, we produce quantum mixtures with typical atom numbers of $N_\mathrm{Yb} \sim 4 \times 10^4$, and $N_\mathrm{Cs} \sim 1 \times 10^4$. Here, the repulsive interspecies interaction ($a_\mathrm{CsYb} = 96\,a_0$) can overwhelm the intraspecies interactions, such that the mixture sits in a region of partial miscibility.

Descriptions

Resource type
Dataset
Contributors
Creator: Wilson, Kali 1
Creator: Guttridge, Alexander 1
Creator: Segal, Jack 1
Creator: Cornish, Simon 1
1 Durham University, UK
Funder
Engineering and Physical Sciences Research Council
Research methods
Other description
Data files used in "Quantum degenerate mixtures of Cs and Yb". For more information refer to the README.txt file included in data zip file.
Keyword
Ultracold atoms
Atomic physics
Bose-Einstein condesates
Subject
Location
Language
Cited in
arxiv:2011.05436
Identifier
ark:/32150/r19880vr01p
doi:10.15128/r19880vr01p
Rights
Creative Commons Attribution 4.0 International (CC BY)

Publisher
Durham University
Date Created

File Details

Depositor
K.E. Wilson
Date Uploaded
Date Modified
23 February 2021, 09:02:59
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Characterization
File format: zip (ZIP Format)
Mime type: application/zip
File size: 45274339
Last modified: 2021:02:22 16:20:25+00:00
Filename: CsYb_Data_22022021.zip
Original checksum: f5556c600d48617b94404200c7c07428
Activity of users you follow
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User N. Syrotiuk has updated Quantum degenerate mixtures of Cs and Yb [dataset] about 3 years ago
User N. Syrotiuk has updated Quantum degenerate mixtures of Cs and Yb [dataset] about 3 years ago
User K.E. Wilson has updated Supporting Data: Quantum degenerate mixtures of Cs and Yb about 3 years ago
User K.E. Wilson has updated Supporting Data: Quantum degenerate mixtures of Cs and Yb about 3 years ago
User K.E. Wilson has added a new version of Supporting Data: Quantum Degenerate Mixtures of Cs and Yb about 3 years ago