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dc.contributor.authorZhuang, Quntao
dc.contributor.authorPirandola, Stefano
dc.date.accessioned2020-07-15T22:35:01Z
dc.date.available2020-07-15T22:35:01Z
dc.date.issued2020-06-02
dc.identifier.citationZhuang, Q., Pirandola, S. Entanglement-enhanced testing of multiple quantum hypotheses. Commun Phys 3, 103 (2020). https://doi.org/10.1038/s42005-020-0369-4en_US
dc.identifier.issn2399-3650
dc.identifier.doi10.1038/s42005-020-0369-4
dc.identifier.urihttp://hdl.handle.net/10150/641867
dc.description.abstractQuantum channel discrimination exploits quantum resources to improve hypothesis testing for binary bosonic channels. Here, the authors overcome the binary setting, showing quantum entanglement greatly enhances the discrimination performance for an arbitrary number of channels. Quantum hypothesis testing has been greatly advanced for the binary discrimination of two states, or two channels. In this setting, we already know that quantum entanglement can be used to enhance the discrimination of two bosonic channels. Here, we remove the restriction of binary hypotheses and show that entangled photons can remarkably boost the discrimination of multiple bosonic channels. More precisely, we formulate a general problem of channel-position finding where the goal is to determine the position of a target channel among many background channels. We prove that, using entangled photons at the input and a generalized form of conditional nulling receiver at the output, we may outperform any classical strategy. Our results can be applied to enhance a range of technological tasks, including the optical readout of sparse classical data, the spectroscopic analysis of a frequency spectrum, and the determination of the direction of a target at fixed range.en_US
dc.language.isoenen_US
dc.publisherNATURE PUBLISHING GROUPen_US
dc.rightsCopyright © The Author(s) 2020. 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-enhanced testing of multiple quantum hypothesesen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Elect & Comp Engnen_US
dc.contributor.departmentUniv Arizona, James C Wyant Coll Opt Scien_US
dc.identifier.journalCOMMUNICATIONS PHYSICSen_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.identifier.pii369
dc.source.journaltitleCommunications Physics
dc.source.volume3
dc.source.issue1
refterms.dateFOA2020-07-15T22:35:04Z


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Copyright © The Author(s) 2020. 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 Copyright © The Author(s) 2020. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License.