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Measurement of the Aharonov-Casher geometric phase with a separated-arm atom interferometer

  • Jonathan Gillot
  • Steven Lepoutre
  • Alexandre Gauguet
  • Jacques Vigué
  • Matthias BüchnerEmail author
Regular Article

Abstract

In this letter, we report a measurement of the Aharonov-Casher (AC) geometric phase with our lithium atom interferometer. The AC phase appears when a particle carrying a magnetic dipole propagates in a transverse electric field. The first measurement of the AC phase was done with a neutron interferometer in 1989 by Cimmino et al. [Phys. Rev. Lett. 63, 380 (1989)] and all the following experiments were done with Ramsey or Ramsey-Bordé interferometers with molecules or atoms. In our experiment, we use lithium atoms pumped in a single hyperfine-Zeeman sublevel and we measure the AC-phase by applying opposite electric fields on the two interferometer arms. Our measurements are in good agreement with the expected theoretical values and they also provide a further test of the independence of the AC phase with the atom velocity.

Keywords

Atomic Physics 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Jonathan Gillot
    • 1
  • Steven Lepoutre
    • 1
  • Alexandre Gauguet
    • 1
  • Jacques Vigué
    • 1
  • Matthias Büchner
    • 1
    Email author
  1. 1.Laboratoire Collisions Agrégats Réactivité-IRSAMCUniversité de Toulouse-UPS and CNRS UMR 5589ToulouseFrance

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