期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.135302
关键词
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资金
- IFRAF
- ANR [ANR-12-BLANAGAFON]
- ERC (Synergy UQUAM)
- Excellence Cluster CUI
- DGA
- EU [PIEF-GA-2011-299731]
We create supercurrents in annular two-dimensional Bose gases through a temperature quench of the normal-to-superfluid phase transition. We detect the magnitude and the direction of these supercurrents by measuring spiral patterns resulting from the interference of the cloud with a central reference disk. These measurements demonstrate the stochastic nature of the supercurrents. We further measure their distribution for different quench times and compare it with predictions based on the Kibble-Zurek mechanism.
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