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- Publisher Website: 10.1038/s41467-019-09505-2
- Scopus: eid_2-s2.0-85064339366
- PMID: 30979876
- WOS: WOS:000464338100012
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Article: The relativistic causality versus no-signaling paradigm for multi-party correlations
Title | The relativistic causality versus no-signaling paradigm for multi-party correlations |
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Authors | |
Issue Date | 2019 |
Citation | Nature Communications, 2019, v. 10, n. 1, article no. 1701 How to Cite? |
Abstract | © 2019, The Author(s). The ubiquitous no-signaling constraints state that the probability distributions of outputs of any subset of parties in a Bell experiment are independent of remaining parties’ inputs. These constraints are considered to form ultimate limits for physical correlations and led to the fields of post-quantum cryptography, randomness generation besides identifying information-theoretic principles underlying quantum theory. Here we show that while these constraints are sufficient, they are not necessary to enforce relativistic causality in multi-party correlations, i.e., the rule that correlations do not allow casual loops. Depending on the space-time coordinates of the measurement events, causality only imposes a subset of no-signaling conditions. We first consider the n-party Bell experiment (n > 2) and identify all configurations where subsets of the constraints suffice. Secondly, we examine the implications for device-independent cryptography against an eavesdropper constrained only by relativity, detailing among other effects explicit attacks on well-known randomness amplification and key distribution protocols. |
Persistent Identifier | http://hdl.handle.net/10722/276644 |
ISSN | 2023 Impact Factor: 14.7 2023 SCImago Journal Rankings: 4.887 |
PubMed Central ID | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Horodecki, Paweł | - |
dc.contributor.author | Ramanathan, Ravishankar | - |
dc.date.accessioned | 2019-09-18T08:34:13Z | - |
dc.date.available | 2019-09-18T08:34:13Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Nature Communications, 2019, v. 10, n. 1, article no. 1701 | - |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.uri | http://hdl.handle.net/10722/276644 | - |
dc.description.abstract | © 2019, The Author(s). The ubiquitous no-signaling constraints state that the probability distributions of outputs of any subset of parties in a Bell experiment are independent of remaining parties’ inputs. These constraints are considered to form ultimate limits for physical correlations and led to the fields of post-quantum cryptography, randomness generation besides identifying information-theoretic principles underlying quantum theory. Here we show that while these constraints are sufficient, they are not necessary to enforce relativistic causality in multi-party correlations, i.e., the rule that correlations do not allow casual loops. Depending on the space-time coordinates of the measurement events, causality only imposes a subset of no-signaling conditions. We first consider the n-party Bell experiment (n > 2) and identify all configurations where subsets of the constraints suffice. Secondly, we examine the implications for device-independent cryptography against an eavesdropper constrained only by relativity, detailing among other effects explicit attacks on well-known randomness amplification and key distribution protocols. | - |
dc.language | eng | - |
dc.relation.ispartof | Nature Communications | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.title | The relativistic causality versus no-signaling paradigm for multi-party correlations | - |
dc.type | Article | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1038/s41467-019-09505-2 | - |
dc.identifier.pmid | 30979876 | - |
dc.identifier.pmcid | PMC6461635 | - |
dc.identifier.scopus | eid_2-s2.0-85064339366 | - |
dc.identifier.hkuros | 308418 | - |
dc.identifier.volume | 10 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | article no. 1701 | - |
dc.identifier.epage | article no. 1701 | - |
dc.identifier.isi | WOS:000464338100012 | - |
dc.identifier.issnl | 2041-1723 | - |