Advances in the measurement of gravity-induced quantum phase shifts

K. C. Littrell, B. E. Allman, S. A. Werner

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

One of the significant successes in the field of neutron interferometry has been the experimental observation of the phase shift of a neutron deBroglie wave due to the action of the Earth's gravitational field. In this experiment the gravity-induced phase shift of the neutron is measured with a statistical uncertainity of order 1 part in 1000 in two different interferometers using nearly harmonic pairs of neutron wavelengths in two different interferometers. Extensions of the theoretical description of the tilt-angle gravity interferogram are discussed. A discrepancy between the theory and measured values of the phase shift due to gravity is observed at the 1% level.

Original languageEnglish
Pages (from-to)1219-1221
Number of pages3
JournalPhysica B: Physics of Condensed Matter
Volume241-243
DOIs
StatePublished - 1997
Externally publishedYes

Keywords

  • Diffraction
  • Equivalence
  • Gravity
  • Interferometry

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