<div class="csl-bib-body">
<div class="csl-entry">Kreuzgruber, E., Wagner, R., Geerits, N., Lemmel, H., & Sponar, S. (2024). Violation of a Leggett-Garg Inequality Using Ideal Negative Measurements in Neutron Interferometry. <i>Physical Review Letters</i>, <i>132</i>(26), 1–6. https://doi.org/10.1103/PhysRevLett.132.260201</div>
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dc.identifier.issn
0031-9007
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/206236
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dc.description.abstract
Leggett-Garg inequalities (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. We report on an experiment that demonstrates the violation of an LGI with neutrons. The final measured value of the Leggett-Garg correlator K=1.120±0.007(stat)±0.019(sys), obtained in a neutron interferometric experiment, is clearly above the limit K=1 predicted by macrorealistic theories. The experimental results are analyzed within the framework of dynamical theory of neutron diffraction, evidently reproducing the obtained values.
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dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.language.iso
en
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dc.publisher
AMER PHYSICAL SOC
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dc.relation.ispartof
Physical Review Letters
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dc.subject
Leggett-Garg Inequality
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dc.subject
Neutron interferometry
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dc.subject
Quantum mechanics
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dc.subject
macroscopic realism
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dc.subject
Neutrons
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dc.title
Violation of a Leggett-Garg Inequality Using Ideal Negative Measurements in Neutron Interferometry
