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Antimatter Interferometry for Gravity Measurements

Paul Hamilton, Andrey Zhmoginov, Francis Robicheaux, Joel Fajans, Jonathan S. Wurtele, and Holger Müller
Phys. Rev. Lett. 112, 121102 – Published 25 March 2014
Physics logo See Synopsis: Giving Weight to Antimatter

Abstract

We describe a light-pulse atom interferometer that is suitable for any species of atom and even for electrons and protons as well as their antiparticles, in particular, for testing the Einstein equivalence principle with antihydrogen. The design obviates the need for resonant lasers through far-off resonant Bragg beam splitters and makes efficient use of scarce atoms by magnetic confinement and atom recycling. We expect to reach an initial accuracy of better than 1% for the acceleration of the free fall of antihydrogen, which can be improved to the part-per million level.

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  • Received 12 August 2013

DOI:https://doi.org/10.1103/PhysRevLett.112.121102

© 2014 American Physical Society

Synopsis

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Giving Weight to Antimatter

Published 25 March 2014

A proposed matter-wave interferometer would enable the test of the gravitational properties of antimatter.

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Authors & Affiliations

Paul Hamilton1, Andrey Zhmoginov1, Francis Robicheaux2,‡, Joel Fajans1,†, Jonathan S. Wurtele1,†, and Holger Müller1,*,†

  • 1Physics Department, University of California, Berkeley, California 94720, USA
  • 2Department of Physics, Auburn University, Auburn, Alabama 36849, USA

  • *hm@berkeley.edu
  • Also at Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA.
  • Present address: Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA.

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Issue

Vol. 112, Iss. 12 — 28 March 2014

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