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dc.contributor.authorZhang, Bingzhi
dc.contributor.authorZhuang, Quntao
dc.date.accessioned2021-03-19T00:33:26Z
dc.date.available2021-03-19T00:33:26Z
dc.date.issued2021-02-16
dc.identifier.citationZhang, B., & Zhuang, Q. (2021). Entanglement formation in continuous-variable random quantum networks. npj Quantum Information, 7(1), 1-12.en_US
dc.identifier.issn2056-6387
dc.identifier.doi10.1038/s41534-021-00370-w
dc.identifier.urihttp://hdl.handle.net/10150/657131
dc.description.abstractEntanglement is not only important for understanding the fundamental properties of many-body systems, but also the crucial resource enabling quantum advantages in practical information processing tasks. Although previous works on quantum networks focus on discrete-variable systems, light—as the only traveling carrier of quantum information in a network—is bosonic and thus requires a continuous-variable description. We extend the study to continuous-variable quantum networks. By mapping the ensemble-averaged entanglement dynamics on an arbitrary network to a random-walk process on a graph, we are able to exactly solve the entanglement dynamics. We identify squeezing as the source of entanglement generation, which triggers a diffusive spread of entanglement with a "parabolic light cone”. A surprising linear superposition law in the entanglement growth is predicted by the theory and numerically verified, despite the nonlinear nature of the entanglement dynamics. The equilibrium entanglement distribution (Page curves) is exactly solved and has various shapes depending on the average squeezing density and strength. © 2021, The Author(s).en_US
dc.description.sponsorshipArmy Research Officeen_US
dc.language.isoenen_US
dc.publisherNature Researchen_US
dc.rights© The Author(s) 2021. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleEntanglement formation in continuous-variable random quantum networksen_US
dc.typeArticleen_US
dc.identifier.eissn2056-6387
dc.contributor.departmentDepartment of Physics, University of Arizonaen_US
dc.contributor.departmentDepartment of Electrical and Computer Engineering, University of Arizonaen_US
dc.contributor.departmentJames C. Wyant College of Optical Sciences, University of Arizonaen_US
dc.identifier.journalnpj Quantum Informationen_US
dc.description.noteOpen access journalen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitlenpj Quantum Information
dc.source.volume7
dc.source.issue1
refterms.dateFOA2021-03-19T00:33:38Z


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© The Author(s) 2021. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License.
Except where otherwise noted, this item's license is described as © The Author(s) 2021. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License.