File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Nonlocality without entanglement: Quantum theory and beyond

TitleNonlocality without entanglement: Quantum theory and beyond
Authors
Issue Date2020
PublisherAmerican Physical Society: Open Access. The Journal's web site is located at https://journals.aps.org/prresearch/
Citation
Physical Review Research, 2020, v. 2, p. article no. 012068(R) How to Cite?
AbstractQuantum nonlocality without entanglement (Q-NWE) captures nonlocal behavior of multipartite product states as they may entail global operation for optimal decoding of the classical information encoded in the state ensemble that allows local preparation. In this Rapid Communication we show that the phenomena of NWE is not specific to quantum theory only, but rather a class of generalized probabilistic theories that can exhibit such behavior. In fact, several manifestations of NWE, e.g., asymmetric local discrimination, suboptimal local discrimination, the notion of separable but locally unimplementable measurements arise generically in operational theories other than quantum theory. We propose a framework to compare the strength of NWE in different theories and show that such behavior in quantum theory is limited, suggesting a specific topological feature of quantum theory, namely, the continuity of state space structure. Our work adds the erstwhile missing foundational appeal to the study of NWE phenomena along with its information-theoretic relevance.
Persistent Identifierhttp://hdl.handle.net/10722/291049
ISSN
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorBhattacharya, SS-
dc.contributor.authorSaha, S-
dc.contributor.authorGuha, T-
dc.contributor.authorBanik, M-
dc.date.accessioned2020-11-02T05:50:50Z-
dc.date.available2020-11-02T05:50:50Z-
dc.date.issued2020-
dc.identifier.citationPhysical Review Research, 2020, v. 2, p. article no. 012068(R)-
dc.identifier.issn2643-1564-
dc.identifier.urihttp://hdl.handle.net/10722/291049-
dc.description.abstractQuantum nonlocality without entanglement (Q-NWE) captures nonlocal behavior of multipartite product states as they may entail global operation for optimal decoding of the classical information encoded in the state ensemble that allows local preparation. In this Rapid Communication we show that the phenomena of NWE is not specific to quantum theory only, but rather a class of generalized probabilistic theories that can exhibit such behavior. In fact, several manifestations of NWE, e.g., asymmetric local discrimination, suboptimal local discrimination, the notion of separable but locally unimplementable measurements arise generically in operational theories other than quantum theory. We propose a framework to compare the strength of NWE in different theories and show that such behavior in quantum theory is limited, suggesting a specific topological feature of quantum theory, namely, the continuity of state space structure. Our work adds the erstwhile missing foundational appeal to the study of NWE phenomena along with its information-theoretic relevance.-
dc.languageeng-
dc.publisherAmerican Physical Society: Open Access. The Journal's web site is located at https://journals.aps.org/prresearch/-
dc.relation.ispartofPhysical Review Research-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleNonlocality without entanglement: Quantum theory and beyond-
dc.typeArticle-
dc.identifier.emailBhattacharya, SS: some@hku.hk-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevResearch.2.012068-
dc.identifier.hkuros317857-
dc.identifier.volume2-
dc.identifier.spagearticle no. 012068(R)-
dc.identifier.epagearticle no. 012068(R)-
dc.identifier.isiWOS:000602698700001-
dc.publisher.placeUnited States-
dc.identifier.issnl2643-1564-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats