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dc.contributor.authorJacobs, Kurt
dc.date.accessioned2017-05-03T12:56:10Z
dc.date.available2017-05-03T12:56:10Z
dc.date.issued2005
dc.date.modified2007-04-13T08:08:23Z
dc.identifier.issn10502947
dc.identifier.urihttp://hdl.handle.net/10072/4906
dc.description.abstractWhen various observers obtain information in an independent fashion about a classical system, there is a simple rule which allows them to pool their knowledge, and this requires only the states-of-knowledge of the respective observers. Here we derive an equivalent quantum formula. While its realm of applicability is necessarily more limited, it does apply to a large class of measurements, and we show explicitly for a single qubit that it satisfies the intuitive notions of what it means to pool knowledge about a quantum system. This analysis also provides a physical interpretation for the trace of the product of two density matrices.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherAmerican Physical Soc.
dc.publisher.placeUSA
dc.publisher.urihttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.72.044101
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom044101.1
dc.relation.ispartofpageto044101.4
dc.relation.ispartofjournalPhysical Review A
dc.relation.ispartofvolume72
dc.rights.retentionY
dc.subject.fieldofresearchHistory and Archaeology
dc.subject.fieldofresearchMathematical Sciences
dc.subject.fieldofresearchPhysical Sciences
dc.subject.fieldofresearchChemical Sciences
dc.subject.fieldofresearchcode21
dc.subject.fieldofresearchcode01
dc.subject.fieldofresearchcode02
dc.subject.fieldofresearchcode03
dc.titleSimple formula for pooling knowledge about a quantum system
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Sciences, School of Natural Sciences
gro.rights.copyright© 2005 American Physical Society. Reproduced in accordance with the copyright policy of the publisher. This journal is available online - use hypertext links.
gro.date.issued2005
gro.hasfulltextNo Full Text
gro.griffith.authorJacobs, Kurt A.


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    Contains articles published by Griffith authors in scholarly journals.

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