Generation of high-winding-number superfluid circulation in Bose-Einstein condensates
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PhysRevA.106.033319.pdf
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Affiliation
Wyant College of Optical Sciences, University of ArizonaIssue Date
2022
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American Physical SocietyCitation
Wilson, K. E., Samson, E. C., Newman, Z. L., & Anderson, B. P. (2022). Generation of high-winding-number superfluid circulation in Bose-Einstein condensates. Physical Review A, 106(3).Journal
Physical Review ARights
Copyright © 2022 American Physical Society.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
We experimentally and numerically demonstrate a method to generate multiply quantized superfluid circulation about an obstacle in highly oblate Bose-Einstein condensates (BECs). We experimentally achieve pinned superflow with winding numbers as high as 11, which persists for at least 4 s. Our method conceptually involves spiraling a blue-detuned laser beam, around and towards the center of the BEC, and is experimentally implemented by moving the BEC in a spiral trajectory around a stationary laser beam. This optical potential serves first as a repulsive stirrer to initiate superflow, and then as a pinning potential to transport the superfluid circulation within the BEC. The spiral technique can be used either to generate a high-winding-number persistent current, or for controlled placement of a cluster of singly quantized vortices of the same circulation. Thus, the technique may serve as a building block in experimental architectures to create on-demand vortex distributions in BECs. © 2022 American Physical Society.Note
Immediate accessISSN
2469-9926Version
Final published versionae974a485f413a2113503eed53cd6c53
10.1103/PhysRevA.106.033319