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dc.contributor.authorRalph, Ten_US
dc.contributor.authorLund, Austinen_US
dc.contributor.authorWiseman, Howarden_US
dc.date.accessioned2017-05-03T11:51:15Z
dc.date.available2017-05-03T11:51:15Z
dc.date.issued2005en_US
dc.date.modified2009-10-08T06:30:35Z
dc.identifier.issn14644266en_US
dc.identifier.doi10.1088/1464-4266/7/10/007en_AU
dc.identifier.urihttp://hdl.handle.net/10072/4932
dc.description.abstractPhoton counting induces an effective non-linear optical phase shift in certain states derived by linear optics from single photons. Although this non-linearity is non-deterministic, it is sufficient in principle to allow scalable linear optics quantum computation (LOQC). The most obvious way to encode a qubit optically is as a superposition of the vacuum and a single photon in one mode-so-called 'single-rail' logic. Until now this approach was thought to be prohibitively expensive (in resources) compared to 'dual-rail' logic where a qubit is stored by a photon across two modes. Here we attack this problem with real-time feedback control, which can realize a quantum-limited phase measurement on a single mode, as has been recently demonstrated experimentally. We show that with this added measurement resource, the resource requirements for single-rail LOQC are not substantially different from those of dual-rail LOQC. In particular, with adaptive phase measurements an arbitrary qubit state a|0> + ߼1> can be prepared deterministically.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent97519 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherInstitute of Physics Publishing Ltden_US
dc.publisher.placeBristol, UKen_US
dc.publisher.urihttp://www.iop.org/EJ/journal/JOptBen_AU
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefromS245en_US
dc.relation.ispartofpagetoS249en_US
dc.relation.ispartofjournalJournal of Optics B: Quantum and semiclassical opticsen_US
dc.relation.ispartofvolume7en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchcode240402en_US
dc.titleAdaptive Phase Measurements in Linear Optical Quantum Computationen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightCopyright 2005 Institute of Physics Publishing. 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.issued2005
gro.hasfulltextFull Text


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