Nonlocal memory effects allow perfect teleportation with mixed states

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Laine, E.-M. Breuer, H.-P. Piilo, J. 2017-05-11T09:15:57Z 2017-05-11T09:15:57Z 2014
dc.identifier.citation Laine , 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 . en
dc.identifier.issn 2045-2322
dc.identifier.other PURE UUID: f6ad1978-08cb-4c60-9448-3948db14d018
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE FILEURL:
dc.description.abstract One 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.format.extent 1-5
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries SCIENTIFIC REPORTS en
dc.relation.ispartofseries Volume 4 en
dc.rights openAccess en
dc.subject.other 114 Physical sciences en
dc.subject.other 221 Nanotechnology en
dc.subject.other 214 Mechanical engineering en
dc.subject.other 218 Environmental engineering en
dc.title Nonlocal memory effects allow perfect teleportation with mixed states en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics en
dc.subject.keyword quantum information
dc.subject.keyword qubits
dc.subject.keyword 114 Physical sciences
dc.subject.keyword 221 Nanotechnology
dc.subject.keyword 214 Mechanical engineering
dc.subject.keyword 218 Environmental engineering
dc.identifier.urn URN:NBN:fi:aalto-201705114357
dc.identifier.doi 10.1038/srep04620
dc.type.version publishedVersion

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