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dc.contributor.authorHuelga, SF
dc.contributor.authorPlenio, MB
dc.contributor.authorVaccaro, JA
dc.date.accessioned2017-05-03T11:16:22Z
dc.date.available2017-05-03T11:16:22Z
dc.date.issued2002
dc.date.modified2009-09-03T07:17:56Z
dc.identifier.issn1050-2947
dc.identifier.doi10.1103/PhysRevA.65.042316
dc.identifier.urihttp://hdl.handle.net/10072/21507
dc.description.abstractWe study the remote implementation of a unitary transformation on the state of a qubit. We show the existence of nontrivial protocols (i.e., using less resources than bidirectional state teleportation) that allow the perfect remote implementation of certain continuous sets of quantum operations. We prove that, up to a local change of basis, only two subsets exist that can be implemented remotely with a nontrivial protocol: Arbitrary rotations around a fixed direction n? and a p rotation about an arbitrary direction lying in a plane orthogonal to n?. The former operations effectively constitute the teleportation of arbitrary angles. The overall classical information and distributed entanglement cost required for the remote implementation depends on whether it is known, a priori, in which of the two teleportable subsets the transformation belongs. If it is known, the optimal protocol consumes one e-bit of entanglement and one c-bit in each direction. If it is not known in which subset the transformation belongs, two e-bits of entanglement need to be consumed and the classical channel becomes asymmetric with two c-bits being conveyed from Alice to Bob but only one from Bob to Alice.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent197136 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.publisher.placeRidge, NY
dc.publisher.urihttp://pra.aps.org/
dc.relation.ispartofpagefrom042316-1
dc.relation.ispartofpageto042316-12
dc.relation.ispartofissue4
dc.relation.ispartofjournalPhysical Review A (Atomic, Molecular and Optical Physics)
dc.relation.ispartofvolume65
dc.subject.fieldofresearchMathematical sciences
dc.subject.fieldofresearchPhysical sciences
dc.subject.fieldofresearchChemical sciences
dc.subject.fieldofresearchcode49
dc.subject.fieldofresearchcode51
dc.subject.fieldofresearchcode34
dc.titleRemote control of restricted sets of operations: Teleportation of angles
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 2002 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 link for access to the definitive, published version.
gro.date.issued2002
gro.hasfulltextFull Text
gro.griffith.authorVaccaro, Joan A.


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