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Very Cold Trapped Atoms in a Vapor Cell

C. Monroe

Joint Institute for Laboratory Astrophysics, University of Colorado, 440 UCB, Boulder, CO 80309-0440, USA

Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA

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W. Swann

Joint Institute for Laboratory Astrophysics, University of Colorado, 440 UCB, Boulder, CO 80309-0440, USA

Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA

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H. Robinson

Joint Institute for Laboratory Astrophysics, University of Colorado, 440 UCB, Boulder, CO 80309-0440, USA

Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA

Permanent address: Physics Department, Duke University, Durham, NC 27706.

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C. Wieman

Joint Institute for Laboratory Astrophysics, University of Colorado, 440 UCB, Boulder, CO 80309-0440, USA

Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA

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https://doi.org/10.1142/9789812813787_0038Cited by:0 (Source: Crossref)

Abstract:

We have produced a very cold sample of spin-polarized trapped atoms. The technique used dramatically simplifies the production of laser-cooled atoms. In this experiment, 1.8×10⁷ neutral cesium atoms were optically captured directly from a low-pressure vapor in in small glass cell. We then cooled the < 1-mm³ cloud of trapped atoms and loaded it into a low-field magnetic trap in the same cell. The magnetically trapped atoms had an effective temperature as low as 1.1 ± 0.2 µK, which is the lowest kinetic temperature ever observed and far colder than any previous sample of trapped atoms.

PACS: 32.80.Pj, 42.50.Vk

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Very Cold Trapped Atoms in a Vapor Cell

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