Adiabatic cooling of cesium to 700 nK in an optical lattice

A. Kastberg, W. D. Phillips, S. L. Rolston, R. J.C. Spreeuw, P. S. Jessen

Research output: Contribution to journalArticlepeer-review

233 Scopus citations


We localize Cs atoms in wavelength-sized potential wells of an optical lattice, and cool them to a three-dimensional temperature of 700 nK by adiabatic expansion. In the optical lattice we precool the atoms to 1 μK. We then reduce the trapping potential in a few hundred μs, causing the atomic center-of-mass distribution to expand and the temperature to decrease by an amount which agrees with a simple 3D band theory. These are the lowest 3D kinetic temperatures ever measured.

Original languageEnglish (US)
Pages (from-to)1542-1545
Number of pages4
JournalPhysical review letters
Issue number9
StatePublished - 1995

ASJC Scopus subject areas

  • General Physics and Astronomy


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