Post-quantum steering is a stronger-than-quantum resource for information processing
Abstract We present the first instance where post-quantum steering is a stronger-than-quantum resource for information processing – remote state preparation. In addition, we show that the phenomenon of post-quantum steering is not just a mere mathematical curiosity allowed by the no-signalling princ...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2022-06-01
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| Series: | npj Quantum Information |
| Online Access: | https://doi.org/10.1038/s41534-022-00574-8 |
| _version_ | 1818235201742962688 |
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| author | Paulo J. Cavalcanti John H. Selby Jamie Sikora Thomas D. Galley Ana Belén Sainz |
| author_facet | Paulo J. Cavalcanti John H. Selby Jamie Sikora Thomas D. Galley Ana Belén Sainz |
| author_sort | Paulo J. Cavalcanti |
| collection | DOAJ |
| description | Abstract We present the first instance where post-quantum steering is a stronger-than-quantum resource for information processing – remote state preparation. In addition, we show that the phenomenon of post-quantum steering is not just a mere mathematical curiosity allowed by the no-signalling principle, but it may arise within compositional theories beyond quantum theory, hence making its study fundamentally relevant. We show these results by formulating a new compositional general probabilistic theory – which we call Witworld – with strong post-quantum features, which proves to be a intuitive and useful tool for exploring steering and its applications beyond the quantum realm. |
| first_indexed | 2024-12-12T11:50:13Z |
| format | Article |
| id | doaj.art-aa5e2252bbed4408b107f74f927702b6 |
| institution | Directory Open Access Journal |
| issn | 2056-6387 |
| language | English |
| last_indexed | 2024-12-12T11:50:13Z |
| publishDate | 2022-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Information |
| spelling | doaj.art-aa5e2252bbed4408b107f74f927702b62022-12-22T00:25:21ZengNature Portfolionpj Quantum Information2056-63872022-06-018111010.1038/s41534-022-00574-8Post-quantum steering is a stronger-than-quantum resource for information processingPaulo J. Cavalcanti0John H. Selby1Jamie Sikora2Thomas D. Galley3Ana Belén Sainz4International Centre for Theory of Quantum Technologies, University of GdańskInternational Centre for Theory of Quantum Technologies, University of GdańskVirginia Polytechnic Institute and State UniversityPerimeter Institute for Theoretical PhysicsInternational Centre for Theory of Quantum Technologies, University of GdańskAbstract We present the first instance where post-quantum steering is a stronger-than-quantum resource for information processing – remote state preparation. In addition, we show that the phenomenon of post-quantum steering is not just a mere mathematical curiosity allowed by the no-signalling principle, but it may arise within compositional theories beyond quantum theory, hence making its study fundamentally relevant. We show these results by formulating a new compositional general probabilistic theory – which we call Witworld – with strong post-quantum features, which proves to be a intuitive and useful tool for exploring steering and its applications beyond the quantum realm.https://doi.org/10.1038/s41534-022-00574-8 |
| spellingShingle | Paulo J. Cavalcanti John H. Selby Jamie Sikora Thomas D. Galley Ana Belén Sainz Post-quantum steering is a stronger-than-quantum resource for information processing npj Quantum Information |
| title | Post-quantum steering is a stronger-than-quantum resource for information processing |
| title_full | Post-quantum steering is a stronger-than-quantum resource for information processing |
| title_fullStr | Post-quantum steering is a stronger-than-quantum resource for information processing |
| title_full_unstemmed | Post-quantum steering is a stronger-than-quantum resource for information processing |
| title_short | Post-quantum steering is a stronger-than-quantum resource for information processing |
| title_sort | post quantum steering is a stronger than quantum resource for information processing |
| url | https://doi.org/10.1038/s41534-022-00574-8 |
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