Article
Driving Bose-Einstein Condensate Vorticity with a Rotating Normal Cloud Public Deposited
https://scholar.colorado.edu/concern/articles/dn39x2192
- Abstract
- We have developed an evaporative cooling technique that accelerates the rotation of an ultracold ⁸⁷Rb gas, confined in a static harmonic potential. As a normal gas is evaporatively spun up and cooled below quantum degeneracy, it is found to nucleate vorticity in a Bose-Einstein condensate. Measurements of the condensate’s aspect ratio and surface-wave excitations are consistent with effective rigid-body rotation. Rotation rates of up to 94% of the centrifugal limit are inferred. A threshold in the normal cloud’s rotation is observed for the intrinsic nucleation of the first vortex. The threshold value lies below the prediction for a nucleation mechanism involving the excitation of surface waves of the condensate.
- Creator
- Date Issued
- 2001-11-19
- Academic Affiliation
- Journal Title
- Journal Issue/Number
- 21
- Journal Volume
- 87
- File Extent
- 210403-1-210403-4
- Last Modified
- 2019-12-05
- Resource Type
- Rights Statement
- DOI
- 10.1103/PhysRevLett.87.210403
- ISSN
- 0031-9007
- Language
Relationships
Items
Thumbnail | Title | Date Uploaded | Visibility | Actions |
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drivingBoseEinsteinCondensateVorticityWithARotatingNormal.pdf | 2019-12-05 | Public | Download |