Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/66077
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dc.contributor.authorRoa, L.
dc.contributor.authorDelgado, A.
dc.contributor.authorLadron De Guevara, M.L.
dc.contributor.authorKlimov, Andrei B.
dc.date.accessioned2015-11-19T18:50:59Z-
dc.date.available2015-11-19T18:50:59Z-
dc.date.issued2006
dc.identifier.urihttp://hdl.handle.net/20.500.12104/66077-
dc.description.abstractWe study the problem of mapping an unknown mixed quantum state onto a known pure state without the use of unitary transformations. This is achieved with the help of sequential measurements of two noncommuting observables only. We show that the overall success probability is maximized in the case of measuring two observables whose eigenstates define mutually unbiased bases. We find that for this optimal case the success probability quickly converges to unity as the number of measurement processes increases and that it is almost independent of the initial state. In particular, we show that to guarantee a success probability close to one the number of consecutive measurements must be larger than the dimension of the Hilbert space. We connect these results to quantum copying, quantum deleting, and entanglement generation. © 2006 The American Physical Society.
dc.titleMeasurement-driven quantum evolution
dc.typeArticle
dc.identifier.doi10.1103/PhysRevA.73.012322
dc.relation.ispartofjournalPhysical Review A - Atomic, Molecular, and Optical Physics
dc.relation.ispartofvolume73
dc.relation.ispartofissue1
dc.contributor.affiliationRoa, L., Center for Quantum Optics and Quantum Information, Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción, Chile; Delgado, A., Center for Quantum Optics and Quantum Information, Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción, Chile; Ladrón De Guevara, M.L., Center for Quantum Optics and Quantum Information, Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción, Chile, Departamento de Física, Universidad Católica Del Norte, Casilla 1280, Antofagasta, Chile; Klimov, A.B., Departamento de Física, Universidad de Guadalajara, Revolución 1500, 44420 Guadalajara, Jalisco, Mexico
dc.contributor.affiliationKlimov, Andrei B., Universidad de Guadalajara. Centro Universitario de Ciencias Exactas e Ingenierías
dc.relation.isReferencedByScopus
dc.relation.isReferencedByWOS
dc.identifier.urlhttp://www.scopus.com/inward/record.url?eid=2-s2.0-33144480269&partnerID=40&md5=f80b2701c714607fdabce063d55bdf8c
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