Violation of a Leggett-Garg inequality using ideal negative measurements in neutron interferometry

• URL: http://arxiv.org/abs/2307.04409v1
• Date: Mon, 10 Jul 2023 08:17:49 GMT
• Title: Violation of a Leggett-Garg inequality using ideal negative measurements in neutron interferometry
• Authors: Elisabeth Kreuzgruber, Richard Wagner, Niels Geerits, Hartmut Lemmel, Stephan Sponar
• Abstract summary: The measured value of K = 1.120 +/- 0.007, obtained in a neutron interferometric experiment, is clearly above the limit K = 1 predicted by macro-realistic theories.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We report on an experiment that demonstrates the violation of a Leggett-Garg inequality (LGI) with neutrons. LGIs have been proposed in order to assess how far the predictions of quantum mechanics defy macroscopic realism. With LGIs, correlations of measurements performed on a single system at different times are described. The measured value of K = 1.120 +/- 0.007, obtained in a neutron interferometric experiment, is clearly above the limit K = 1 predicted by macro-realistic theories.

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