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dc.contributor.authorPegg, DT
dc.contributor.authorJeffers, J
dc.date.accessioned2017-05-03T11:02:47Z
dc.date.available2017-05-03T11:02:47Z
dc.date.issued2005
dc.date.modified2009-10-21T05:34:45Z
dc.identifier.issn0950-0340
dc.identifier.doi10.1080/09500340500106857
dc.identifier.urihttp://hdl.handle.net/10072/4912
dc.description.abstractAll compositions of a mixed state density operator are equivalent for the prediction of the probabilities of future outcomes of measurements. For retrodiction, however, this is not the case. The retrodictive formalism of quantum mechanics provides a criterion for deciding that some compositions are fictional. Fictional compositions do not contain preparation device operators, that is, operators corresponding to states that could have been prepared. We apply this to M謭er's controversial conjecture that optical coherences in laser light are a fiction and find agreement with his conjecture. We generalise M謭er's derivation of the interference between two lasers to avoid the use of any fictional states. We also examine another possible method for discriminating between coherent states and photon number states in laser light and find that it does not work, with the equivalence for prediction saved by entanglement.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent153475 bytes
dc.format.extent59421 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.languageEnglish
dc.language.isoeng
dc.publisherTaylor & Francis
dc.publisher.placeLondon, UK
dc.publisher.urihttp://www.informaworld.com/smpp/title~db=all~content=t713191304
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom1835
dc.relation.ispartofpageto1856
dc.relation.ispartofjournalJournal of Modern Optics
dc.relation.ispartofvolume52
dc.rights.retentionY
dc.subject.fieldofresearchAtomic, molecular and optical physics
dc.subject.fieldofresearchQuantum physics
dc.subject.fieldofresearchNanotechnology
dc.subject.fieldofresearchcode5102
dc.subject.fieldofresearchcode5108
dc.subject.fieldofresearchcode4018
dc.titleQuantum nature of laser light
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 2005 Taylor & Francis : The author-version of this article will be available for download [12-18 months] after publication : Use hypertext link to access the version of the publisher.
gro.date.issued2005
gro.hasfulltextFull Text
gro.griffith.authorPegg, David T.


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