Quantum causality emerging in a delayed-choice quantum Cheshire Cat experiment with neutrons
Abstract We report an experiment with neutrons in a silicon perfect crystal interferometer, that realizes a quantum Cheshire Cat in a delayed choice setting. In our setup the quantum Cheshire Cat is established by spatially separating the particle and its property (i.e. the neutron and its spin) int...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-03-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-29970-6 |
| _version_ | 1827984621080412160 |
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| author | Richard Wagner Wenzel Kersten Hartmut Lemmel Stephan Sponar Yuji Hasegawa |
| author_facet | Richard Wagner Wenzel Kersten Hartmut Lemmel Stephan Sponar Yuji Hasegawa |
| author_sort | Richard Wagner |
| collection | DOAJ |
| description | Abstract We report an experiment with neutrons in a silicon perfect crystal interferometer, that realizes a quantum Cheshire Cat in a delayed choice setting. In our setup the quantum Cheshire Cat is established by spatially separating the particle and its property (i.e. the neutron and its spin) into the two different paths of the interferometer. The condition for a delayed choice setting is achieved by postponing the choice of path assignment for the quantum Cheshire Cat, i.e. which path is taken by the particle and which by its property, until the point in time when the neutron wave function has already split and entered the interferometer. The results of the experiment suggest not only the fact that the neutrons and its spin are separated and take different paths in the interferometer, but also quantum-mechanical causality is implied, insomuch that the behavior of a quantum system is affected by the choice of the selection at a later point in time. |
| first_indexed | 2024-04-09T23:02:19Z |
| format | Article |
| id | doaj.art-ee36d62d19a4428c9d3b5add68d99264 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-09T23:02:19Z |
| publishDate | 2023-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-ee36d62d19a4428c9d3b5add68d992642023-03-22T10:57:13ZengNature PortfolioScientific Reports2045-23222023-03-0113111310.1038/s41598-023-29970-6Quantum causality emerging in a delayed-choice quantum Cheshire Cat experiment with neutronsRichard Wagner0Wenzel Kersten1Hartmut Lemmel2Stephan Sponar3Yuji Hasegawa4Atominstitut, TU WienAtominstitut, TU WienAtominstitut, TU WienAtominstitut, TU WienAtominstitut, TU WienAbstract We report an experiment with neutrons in a silicon perfect crystal interferometer, that realizes a quantum Cheshire Cat in a delayed choice setting. In our setup the quantum Cheshire Cat is established by spatially separating the particle and its property (i.e. the neutron and its spin) into the two different paths of the interferometer. The condition for a delayed choice setting is achieved by postponing the choice of path assignment for the quantum Cheshire Cat, i.e. which path is taken by the particle and which by its property, until the point in time when the neutron wave function has already split and entered the interferometer. The results of the experiment suggest not only the fact that the neutrons and its spin are separated and take different paths in the interferometer, but also quantum-mechanical causality is implied, insomuch that the behavior of a quantum system is affected by the choice of the selection at a later point in time.https://doi.org/10.1038/s41598-023-29970-6 |
| spellingShingle | Richard Wagner Wenzel Kersten Hartmut Lemmel Stephan Sponar Yuji Hasegawa Quantum causality emerging in a delayed-choice quantum Cheshire Cat experiment with neutrons Scientific Reports |
| title | Quantum causality emerging in a delayed-choice quantum Cheshire Cat experiment with neutrons |
| title_full | Quantum causality emerging in a delayed-choice quantum Cheshire Cat experiment with neutrons |
| title_fullStr | Quantum causality emerging in a delayed-choice quantum Cheshire Cat experiment with neutrons |
| title_full_unstemmed | Quantum causality emerging in a delayed-choice quantum Cheshire Cat experiment with neutrons |
| title_short | Quantum causality emerging in a delayed-choice quantum Cheshire Cat experiment with neutrons |
| title_sort | quantum causality emerging in a delayed choice quantum cheshire cat experiment with neutrons |
| url | https://doi.org/10.1038/s41598-023-29970-6 |
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