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dc.contributor.authorAhn, Charleneen_US
dc.contributor.authorWiseman, Howarden_US
dc.contributor.authorMilburn, G.en_US
dc.date.accessioned2017-05-03T11:51:00Z
dc.date.available2017-05-03T11:51:00Z
dc.date.issued2003en_US
dc.date.modified2009-10-12T23:14:38Z
dc.identifier.issn10502947en_US
dc.identifier.doi10.1103/PhysRevA.67.052310en_AU
dc.identifier.urihttp://hdl.handle.net/10072/6301
dc.description.abstractWe show that quantum feedback control can be used as a quantum-error-correction process for errors induced by a weak continuous measurement. In particular, when the error model is restricted to one, perfectly measured, error channel per physical qubit, quantum feedback can act to perfectly protect a stabilizer codespace. Using the stabilizer formalism we derive an explicit scheme, involving feedback and an additional constant Hamiltonian, to protect an (n-1)-qubit logical state encoded in n physical qubits. This works for both Poisson (jump) and white-noise (diffusion) measurement processes. Universal quantum computation is also possible in this scheme. As an example, we show that detected-spontaneous emission error correction with a driving Hamiltonian can greatly reduce the amount of redundancy required to protect a state from that which has been previously postulated [e.g., Alber et al., Phys. Rev. Lett. 86, 4402 (2001)].en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent189620 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/en_AU
dc.relation.ispartofpagefrom052310.1en_US
dc.relation.ispartofpageto052310.11en_US
dc.relation.ispartofjournalPhysical Review Aen_US
dc.relation.ispartofvolume67en_US
dc.subject.fieldofresearchcode240201en_US
dc.titleQuantum error correction for continuously detected errors.en_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightCopyright 2003 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.issued2003
gro.hasfulltextFull Text


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