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Yu N, Dehmelt H, Nagourney W. Trapped individual ion at absolute zero temperature. Proc Natl Acad Sci U S A. 1989;86(15):5671doi: 10.1073/pnas.86.15.5671.
Yu, N., Dehmelt, H., & Nagourney, W. (1989). Trapped individual ion at absolute zero temperature. Proceedings of the National Academy of Sciences of the United States of America, 86(15), 5671. https://doi.org/10.1073/pnas.86.15.5671
Yu, N, et al. "Trapped individual ion at absolute zero temperature." Proceedings of the National Academy of Sciences of the United States of America vol. 86,15 (1989): 5671. doi: https://doi.org/10.1073/pnas.86.15.5671
Yu N, Dehmelt H, Nagourney W. Trapped individual ion at absolute zero temperature. Proc Natl Acad Sci U S A. 1989 Aug;86(15):5671. doi: 10.1073/pnas.86.15.5671. PMID: 16594054; PMCID: PMC297690.
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Proc Natl Acad Sci U S A. 1989 Aug;86(15):5671. doi: 10.1073/pnas.86.15.5671.

Trapped individual ion at absolute zero temperature.

Proceedings of the National Academy of Sciences of the United States of America

N Yu, H Dehmelt, W Nagourney

Affiliations

  1. Department of Physics, FM-15, University of Washington, Seattle, WA 98195.

PMID: 16594054 PMCID: PMC297690 DOI: 10.1073/pnas.86.15.5671

Abstract

Laser cooling and ion trapping have progressed to such an extent that one can now speak of realizing a confined atom at absolute zero temperature. In this short publication, we analyze an experiment toward such realization using a single Ba(+) ion in a miniature rf trap. The Ba(+) ion is first laser-cooled to the limit where the ion spends most of its time in the zero-point energy state. Then a test sequence allows one to verify whether or not the ion is actually in its zero-point state. The test sequence may also serve as a device for state selection of an atom at absolute zero temperature.

References

  1. Phys Rev Lett. 1986 Jun 30;56(26):2797-2799 - PubMed
  2. Phys Rev Lett. 1989 Jan 23;62(4):403-406 - PubMed

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