Very cold trapped atoms in a vapor cell

C. Monroe, W. Swann, H. Robinson, and C. Wieman
Phys. Rev. Lett. 65, 1571 – Published 24 September 1990
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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 a 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.

  • Received 31 May 1990

DOI:https://doi.org/10.1103/PhysRevLett.65.1571

©1990 American Physical Society

Authors & Affiliations

C. Monroe, W. Swann, H. Robinson, and C. Wieman

  • Joint Institute for Laboratory Astrophysics, University of Colorado National Institute of Standards and Technology, and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440

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Issue

Vol. 65, Iss. 13 — 24 September 1990

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