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Nonlocal memory effects allow perfect teleportation with mixed states

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 p...

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Autores principales: Laine, Elsi-Mari, Breuer, Heinz-Peter, Piilo, Jyrki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3980228/
https://www.ncbi.nlm.nih.gov/pubmed/24714695
http://dx.doi.org/10.1038/srep04620
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author Laine, Elsi-Mari
Breuer, Heinz-Peter
Piilo, Jyrki
author_facet Laine, Elsi-Mari
Breuer, Heinz-Peter
Piilo, Jyrki
author_sort Laine, Elsi-Mari
collection PubMed
description 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.
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spelling pubmed-39802282014-04-09 Nonlocal memory effects allow perfect teleportation with mixed states Laine, Elsi-Mari Breuer, Heinz-Peter Piilo, Jyrki Sci Rep Article 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. Nature Publishing Group 2014-04-09 /pmc/articles/PMC3980228/ /pubmed/24714695 http://dx.doi.org/10.1038/srep04620 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. The images in this article are included in the article's Creative Commons license, unless indicated otherwise in the image credit; if the image is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the image. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Laine, Elsi-Mari
Breuer, Heinz-Peter
Piilo, Jyrki
Nonlocal memory effects allow perfect teleportation with mixed states
title Nonlocal memory effects allow perfect teleportation with mixed states
title_full Nonlocal memory effects allow perfect teleportation with mixed states
title_fullStr Nonlocal memory effects allow perfect teleportation with mixed states
title_full_unstemmed Nonlocal memory effects allow perfect teleportation with mixed states
title_short Nonlocal memory effects allow perfect teleportation with mixed states
title_sort nonlocal memory effects allow perfect teleportation with mixed states
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3980228/
https://www.ncbi.nlm.nih.gov/pubmed/24714695
http://dx.doi.org/10.1038/srep04620
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