Elsevier

Physica B: Condensed Matter

Volumes 241–243, December 1997, Pages 1219-1221
Physica B: Condensed Matter

Advances in the measurement of gravity-induced quantum phase shifts

https://doi.org/10.1016/S0921-4526(97)00832-6Get rights and content

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.

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Cited by (2)

This work was supported by National Science Foundation Physics Division through Grant No. 9603559. K.C.L. recieved additional support through the U.S. Department of Education.

1

We gratefully achnowledge the assistance of K. Hoag and O. Motrunich.

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