Spielman, I.
, Zhao, M.
and Tao, J.
(2025),
Kolmogorov turbulence in atomic Bose-Einstein condensates, Nature Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=958228
(Accessed April 11, 2025)
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Kolmogorov turbulence in atomic Bose-Einstein condensates
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Author(s)
, Mingshu Zhao, Junheng Tao
Abstract
We investigated turbulence in atomic Bose-Einstein condensates (BECs) using a minimally destructive, impurity injection technique analogous to particle image velocimetry in conventional fluids. Our approach transfers small regions of the BEC into a different hyperfine state, and tracks their displacement yielding the velocity field. This allows us to quantify turbulence in the same way as conventional in fluid dynamics in terms of velocity-velocity correlation functions called velocity structure functions. The observed structure functions obey a Kolmogorov scaling law, in addition the velocity increments show a clear fat-tail non-Gaussian distribution. These results provide direct evidence of large, i.e. inertial, scale quantum turbulence in BECs.Citation
Nature Physics
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Created February 25, 2025, Updated March 5, 2025