Improvement of the polarized neutron interferometer setup demonstrating violation of a Bell-like inequality
For precise measurements with polarised neutrons high efficient spin-manipulation is required. We developed several neutron optical elements suitable for a new sophisticated setup, i.e., DC spin-turners and Larmor-accelerators which diminish thermal disturbances and depolarisation considerably. The...
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| Format: | Online |
| Language: | English |
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North-Holland
2014
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4375610/ |
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pubmed-4375610 |
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pubmed-43756102015-06-16 Improvement of the polarized neutron interferometer setup demonstrating violation of a Bell-like inequality Geppert, H. Denkmayr, T. Sponar, S. Lemmel, H. Hasegawa, Y. Article For precise measurements with polarised neutrons high efficient spin-manipulation is required. We developed several neutron optical elements suitable for a new sophisticated setup, i.e., DC spin-turners and Larmor-accelerators which diminish thermal disturbances and depolarisation considerably. The gain in performance is exploited demonstrating violation of a Bell-like inequality for a spin-path entangled single-neutron state. The obtained value of S=2.365(13), which is much higher than previous measurements by neutron interferometry, is 28σ above the limit of S=2 predicted by contextual hidden variable theories. The new setup is more flexible referring to state preparation and analysis, therefore new, more precise measurements can be carried out. North-Holland 2014-11-01 /pmc/articles/PMC4375610/ /pubmed/26089579 http://dx.doi.org/10.1016/j.nima.2014.06.080 Text en © 2014 The Authors http://creativecommons.org/licenses/by/3.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Geppert, H. Denkmayr, T. Sponar, S. Lemmel, H. Hasegawa, Y. |
| spellingShingle |
Geppert, H. Denkmayr, T. Sponar, S. Lemmel, H. Hasegawa, Y. Improvement of the polarized neutron interferometer setup demonstrating violation of a Bell-like inequality |
| author_facet |
Geppert, H. Denkmayr, T. Sponar, S. Lemmel, H. Hasegawa, Y. |
| author_sort |
Geppert, H. |
| title |
Improvement of the polarized neutron interferometer setup demonstrating violation of a Bell-like inequality |
| title_short |
Improvement of the polarized neutron interferometer setup demonstrating violation of a Bell-like inequality |
| title_full |
Improvement of the polarized neutron interferometer setup demonstrating violation of a Bell-like inequality |
| title_fullStr |
Improvement of the polarized neutron interferometer setup demonstrating violation of a Bell-like inequality |
| title_full_unstemmed |
Improvement of the polarized neutron interferometer setup demonstrating violation of a Bell-like inequality |
| title_sort |
improvement of the polarized neutron interferometer setup demonstrating violation of a bell-like inequality |
| description |
For precise measurements with polarised neutrons high efficient spin-manipulation is required. We developed several neutron optical elements suitable for a new sophisticated setup, i.e., DC spin-turners and Larmor-accelerators which diminish thermal disturbances and depolarisation considerably. The gain in performance is exploited demonstrating violation of a Bell-like inequality for a spin-path entangled single-neutron state. The obtained value of S=2.365(13), which is much higher than previous measurements by neutron interferometry, is 28σ above the limit of S=2 predicted by contextual hidden variable theories. The new setup is more flexible referring to state preparation and analysis, therefore new, more precise measurements can be carried out. |
| publisher |
North-Holland |
| publishDate |
2014 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4375610/ |
| _version_ |
1613204082851315712 |