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Superfluid Helium Drops Levitated in High Vacuum

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Version 2 2023-02-03, 17:00
Version 1 2023-01-12, 13:59
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posted on 2023-02-03, 17:00 authored by C. D. Brown, Y. Wang, M. Namazi, G. I. Harris, M. T. Uysal, J. G. E. Harris
We demonstrate the trapping of millimeter-scale superfluid Helium drops in high vacuum. The drops are sufficiently isolated that they remain trapped indefinitely, cool by evaporation to 330 mK, and exhibit mechanical damping that is limited by internal processes. The drops are also shown to host optical whispering gallery modes. The approach described here combines the advantages of multiple techniques, and should offer access to new experimental regimes of cold chemistry, superfluid physics, and optomechanics.

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