Violation of a Leggett-Garg inequality using ideal negative measurements in neutron interferometry
arXiv:2307.04409 · doi:10.1103/PhysRevLett.132.260201
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.
arXiv comment6 pages, 8 figures
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- Assessing the dynamical assumptions in Tsirelson inequality tests of non-classicality in harmonic oscillators
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