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dc.contributor.authorW. Spekkens, Roberten_US
dc.contributor.authorWiseman, Howarden_US
dc.contributor.editorGordon W.F. Drake, Margaret Malloyen_US
dc.date.accessioned2017-04-24T08:47:54Z
dc.date.available2017-04-24T08:47:54Z
dc.date.issued2007en_US
dc.date.modified2009-10-13T21:50:30Z
dc.identifier.issn10502947en_US
dc.identifier.doi10.1103/PhysRevA.75.042104en_AU
dc.identifier.urihttp://hdl.handle.net/10072/18282
dc.description.abstractWe consider the pooling of quantum states when Alice and Bob both have one part of a tripartite system and, on the basis of measurements on their respective parts, each infers a quantum state for the third part S. We denote the conditioned states which Alice and Bob assign to S by alpha and beta respectively, while the unconditioned state of S is rho. The state assigned by an overseer, who has all the data available to Alice and Bob, is omega. The pooler is told only alpha, beta, and rho. We show that for certain classes of tripartite states, this information is enough for her to reconstruct omega by the formula omega /propto alpha rho^{-1} beta. Specifically, we identify two classes of states for which this pooling formula works: (i) all pure states for which the rank of rho is equal to the product of the ranks of the states of Alice's and Bob's subsystems; (ii) all mixtures of tripartite product states that are mutually orthogonal on S.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent128885 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherAmerican Physical Societyen_US
dc.publisher.placeRidge, NYen_US
dc.publisher.urihttp://pra.aps.org/en_AU
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom042104-1en_US
dc.relation.ispartofpageto042104-5en_US
dc.relation.ispartofjournalPhysical Review A (Atomic, Molecular and Optical Physics)en_US
dc.relation.ispartofvolume75en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchcode240210en_US
dc.titlePooling quantum states obtained by indirect measurementsen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightCopyright 2007 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.en_AU
gro.date.issued2007
gro.hasfulltextFull Text


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