Advertisement

An Atom Interferometer as a Thermometer

  • M. K. Oberthaler
  • C. L. Webb
  • R. M. Godun
  • P. D. Featonby
  • G. S. Summy
  • C. J. Foot
  • K. Burnett
Chapter
Part of the Physics of Atoms and Molecules book series (PAMO)

Abstract

Atom interferometers provide a unique way in which to study atomic de Broglie waves1} and properties of atomic sources. One such property of the atomic ensemble, the temperature, is associated with the coherence length, which can be measured with an interferometer. This can be used to deduce the temperature even at very low temperatures where time of flight methods fail.

Keywords

Coherence Length Matter Wave Atomic Ensemble Spatial Displacement Fringe Visibility 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    For an overview of the subject see Atom Interferometry, edited by P. Berman, (Academic Press, San Diego, 1997).Google Scholar
  2. 2.
    Molecular Beams, N.F. Ramsey, (Oxford University Press, Oxford, 1986).Google Scholar
  3. 3.
    P.D. Featonby et ai, Phys. Rev. Lett. 81: (1998)Google Scholar
  4. 4.
    P. Marte et al, Phys. Rev. A 44:R4118 (1991), J. Lawall and M. Prentiss, Phys. Rev. Lett. 72:993 (1994), L. Goldner et al., Phys. Rev. Lett. 72:997 (1994), P. Featonby et al., Phys. Rev. A 5:373 (1996).ADSCrossRefGoogle Scholar
  5. 5.
    J. Kuklinski et al., Phys. Rev. A 40:6741 (1989).ADSCrossRefGoogle Scholar
  6. 6.
    This process is what is meant by the term AT for the remainder of this article.Google Scholar
  7. 7.
    This is a valid approximation as long as the AT causes no velocity selection. A model of the π — σ+ — π AT we have developed indicates that velocity selection for a 3 μK sample of atoms is only significant when the pulse length is greater than approximately 20μS. We have also confirmed this experimentally and these results will be presented in a forthcoming paper.Google Scholar

Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • M. K. Oberthaler
    • 1
  • C. L. Webb
    • 1
  • R. M. Godun
    • 1
  • P. D. Featonby
    • 1
  • G. S. Summy
    • 1
  • C. J. Foot
    • 1
  • K. Burnett
    • 1
  1. 1.The Clarendon LaboratoryUniversity of OxfordOxfordEngland, U.K.

Personalised recommendations