Quantum superpositions of ‘common-cause’ and ‘direct-cause’ causal structures
The constraints arising for a general set of causal relations, both classically and quantumly, are still poorly understood. As a step in exploring this question, we consider a coherently controlled superposition of ‘direct-cause’ and ‘common-cause’ relationships between two events. We propose an imp...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2017-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aa9b1a |
| _version_ | 1797750665692315648 |
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| author | Adrien Feix Časlav Brukner |
| author_facet | Adrien Feix Časlav Brukner |
| author_sort | Adrien Feix |
| collection | DOAJ |
| description | The constraints arising for a general set of causal relations, both classically and quantumly, are still poorly understood. As a step in exploring this question, we consider a coherently controlled superposition of ‘direct-cause’ and ‘common-cause’ relationships between two events. We propose an implementation involving the spatial superposition of a mass and general relativistic time dilation. Finally, we develop a computationally efficient method to distinguish such genuinely quantum causal structures from classical (incoherent) mixtures of causal structures and show how to design experimental verifications of the nonclassicality of a causal structure. |
| first_indexed | 2024-03-12T16:37:08Z |
| format | Article |
| id | doaj.art-15eff24ad35f4d5796449743fe810009 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:37:08Z |
| publishDate | 2017-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-15eff24ad35f4d5796449743fe8100092023-08-08T14:49:06ZengIOP PublishingNew Journal of Physics1367-26302017-01-01191212302810.1088/1367-2630/aa9b1aQuantum superpositions of ‘common-cause’ and ‘direct-cause’ causal structuresAdrien Feix0https://orcid.org/0000-0002-1819-4574Časlav Brukner1Faculty of Physics, University of Vienna , Boltzmanngasse 5, A-1090 Vienna, Austria; Institute for Quantum Optics and Quantum Information (IQOQI), Boltzmanngasse 3, A-1090 Vienna, AustriaFaculty of Physics, University of Vienna , Boltzmanngasse 5, A-1090 Vienna, Austria; Institute for Quantum Optics and Quantum Information (IQOQI), Boltzmanngasse 3, A-1090 Vienna, AustriaThe constraints arising for a general set of causal relations, both classically and quantumly, are still poorly understood. As a step in exploring this question, we consider a coherently controlled superposition of ‘direct-cause’ and ‘common-cause’ relationships between two events. We propose an implementation involving the spatial superposition of a mass and general relativistic time dilation. Finally, we develop a computationally efficient method to distinguish such genuinely quantum causal structures from classical (incoherent) mixtures of causal structures and show how to design experimental verifications of the nonclassicality of a causal structure.https://doi.org/10.1088/1367-2630/aa9b1aquantum informationquantum foundationsquantum causality |
| spellingShingle | Adrien Feix Časlav Brukner Quantum superpositions of ‘common-cause’ and ‘direct-cause’ causal structures New Journal of Physics quantum information quantum foundations quantum causality |
| title | Quantum superpositions of ‘common-cause’ and ‘direct-cause’ causal structures |
| title_full | Quantum superpositions of ‘common-cause’ and ‘direct-cause’ causal structures |
| title_fullStr | Quantum superpositions of ‘common-cause’ and ‘direct-cause’ causal structures |
| title_full_unstemmed | Quantum superpositions of ‘common-cause’ and ‘direct-cause’ causal structures |
| title_short | Quantum superpositions of ‘common-cause’ and ‘direct-cause’ causal structures |
| title_sort | quantum superpositions of common cause and direct cause causal structures |
| topic | quantum information quantum foundations quantum causality |
| url | https://doi.org/10.1088/1367-2630/aa9b1a |
| work_keys_str_mv | AT adrienfeix quantumsuperpositionsofcommoncauseanddirectcausecausalstructures AT caslavbrukner quantumsuperpositionsofcommoncauseanddirectcausecausalstructures |