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dc.contributor.authorWang, Jinen_US
dc.contributor.authorWiseman, Howarden_US
dc.contributor.editorBernd Crasemannen_US
dc.date.accessioned2017-05-03T13:32:04Z
dc.date.available2017-05-03T13:32:04Z
dc.date.issued2001en_US
dc.date.modified2009-12-01T05:29:44Z
dc.identifier.issn10502947en_US
dc.identifier.doi10.1103/PhysRevA.64.063810en_AU
dc.identifier.urihttp://hdl.handle.net/10072/3761
dc.description.abstractUnit-efficiency homodyne detection of the resonance fluorescence of a two-level atom collapses the quantum state of the atom to a stochastically moving point on the Bloch sphere. Recently, Hofmann, Mahler, and Hess [Phys. Rev. A 57, 4877 (1998)] showed that by making part of the coherent driving proportional to the homodyne photocurrent one can stabilize the state to any point on the bottom-half of the sphere. Here we reanalyze their proposal using the technique of stochastic master equations, allowing their results to be generalized in two ways. First, we show that any point on the upper- or lower-half, but not the equator, of the sphere may be stabilized. Second, we consider nonunit-efficiency detection, and quantify the effectiveness of the feedback by calculating the maximal purity obtainable in any particular direction in Bloch space.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent382262 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherAmerican Physical Societyen_US
dc.publisher.placeUSAen_US
dc.publisher.urihttp://prola.aps.org/browse/PRAen_AU
dc.relation.ispartofpagefrom063810.1en_US
dc.relation.ispartofpageto063810.9en_US
dc.relation.ispartofissue6en_US
dc.relation.ispartofjournalPhysical Review A: Atomic, Molecular and Optical Physicsen_US
dc.relation.ispartofvolume64en_US
dc.subject.fieldofresearchcode240201en_US
dc.titleFeedback-stabilization of an arbitrary pure state of a two-level atomen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith Institute for Drug Discoveryen_US
gro.rights.copyrightCopyright 2001 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.issued2001
gro.hasfulltextFull Text


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