Nonlocal memory effects allow perfect teleportation with mixed states

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorLaine, E.-M.en_US
dc.contributor.authorBreuer, H.-P.en_US
dc.contributor.authorPiilo, J.en_US
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.groupauthorQuantum Computing and Devicesen
dc.date.accessioned2017-05-11T09:15:57Z
dc.date.available2017-05-11T09:15:57Z
dc.date.issued2014en_US
dc.description.abstractOne of the most striking consequences of quantum physics is quantum teleportation – the possibility to transfer quantum states over arbitrary distances. Since its theoretical introduction, teleportation has been demonstrated experimentally up to the distance of 143 km. In the original proposal two parties share a maximally entangled quantum state acting as a resource for the teleportation task. If, however, the state is influenced by decoherence, perfect teleportation can no longer be accomplished. Therefore, one of the current major challenges in accomplishing teleportation over long distances is to overcome the limitations imposed by decoherence and the subsequent mixedness of the resource state. Here we show that, in the presence of nonlocal memory effects, perfect quantum teleportation can be achieved even with mixed photon polarisation states. Our results imply that memory effects can be exploited in harnessing noisy quantum systems for quantum communication and that non-Markovianity is a resource for quantum information tasks.en
dc.description.versionPeer revieweden
dc.format.extent1-5
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationLaine, E-M, Breuer, H-P & Piilo, J 2014, ' Nonlocal memory effects allow perfect teleportation with mixed states ', Scientific Reports, vol. 4, 4620, pp. 1-5 . https://doi.org/10.1038/srep04620en
dc.identifier.doi10.1038/srep04620en_US
dc.identifier.issn2045-2322
dc.identifier.otherPURE UUID: f6ad1978-08cb-4c60-9448-3948db14d018en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/f6ad1978-08cb-4c60-9448-3948db14d018en_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/12913892/srep04620.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/25982
dc.identifier.urnURN:NBN:fi:aalto-201705114357
dc.language.isoenen
dc.relation.ispartofseriesSCIENTIFIC REPORTSen
dc.relation.ispartofseriesVolume 4en
dc.rightsopenAccessen
dc.subject.keywordquantum informationen_US
dc.subject.keywordqubitsen_US
dc.titleNonlocal memory effects allow perfect teleportation with mixed statesen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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