Experiment on Interaction-Free Measurement in Neutron Interferometry
Meinrad Hafner, Johann Summhammer
Abstract
A neutron interferometric test of interaction-free detection of the presence of an absorbing object in one arm of a neutron interferometer has been performed. Despite deviations from the ideal performance characteristics of a Mach-Zehnder interferometer it could be shown that information is obtained without interaction.
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