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  • Cooling Bose-Einstein condensates below 500 picokelvin

    Author(s)
    Leanhardt, A.
    asquini, T.
    Saba, M.
    Schirotzek, A.
    Shin, Y.
    Kielpinski, D
    Pritchard, D.
    Ketterle, W.
    Griffith University Author(s)
    Kielpinski, David
    Year published
    2003
    Metadata
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    Abstract
    Spin-polarized gaseous Bose-Einstein condensates were confined by a combination of gravitational and magnetic forces. The partially condensed atomic vapors were adiabatically decompressed by weakening the gravito-magnetic trap to a mean frequency of 1hertz, then evaporatively reduced in size to 2500 atoms. This lowered the peak condensate density to 5 x 1010 atoms per cubic centimeter and cooled the entire cloud in all three dimensions to a kinetic temperature of 450 ᠸ0 picokelvin. Such spin-polarized, dilute, and ultracold gases are important for spectroscopy, metrology, and atom optics.Spin-polarized gaseous Bose-Einstein condensates were confined by a combination of gravitational and magnetic forces. The partially condensed atomic vapors were adiabatically decompressed by weakening the gravito-magnetic trap to a mean frequency of 1hertz, then evaporatively reduced in size to 2500 atoms. This lowered the peak condensate density to 5 x 1010 atoms per cubic centimeter and cooled the entire cloud in all three dimensions to a kinetic temperature of 450 ᠸ0 picokelvin. Such spin-polarized, dilute, and ultracold gases are important for spectroscopy, metrology, and atom optics.
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    Journal Title
    Science
    Volume
    301
    Publisher URI
    http://sciencemag.org/
    DOI
    https://doi.org/10.1126/science.1088827
    Copyright Statement
    © 2003 AAAS. Self-archiving of the author-manuscript version in an institutional repository is not yet supported by this publisher. Use hypertext link above to access the journal website.
    Publication URI
    http://hdl.handle.net/10072/15492
    Collection
    • Journal articles

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