Multiport based teleportation – transmission of a large amount of quantum information

We analyse the problem of transmitting a number of unknown quantum states or one composite system in one go. We derive a lower bound on the performance of such process, measured in the entanglement fidelity. The obtained bound is effectively computable and outperforms the explicit values of the enta...

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Autores principales:	Piotr Kopszak, Marek Mozrzymas, Michał Studziński, Michał Horodecki
Formato:	article
Lenguaje:	EN
Publicado:	Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/2d44df9a91f24defb0e27ccb1576ba82
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spelling	oai:doaj.org-article:2d44df9a91f24defb0e27ccb1576ba822021-11-11T17:34:39ZMultiport based teleportation – transmission of a large amount of quantum information2521-327X10.22331/q-2021-11-11-576https://doaj.org/article/2d44df9a91f24defb0e27ccb1576ba822021-11-01T00:00:00Zhttps://quantum-journal.org/papers/q-2021-11-11-576/pdf/https://doaj.org/toc/2521-327XWe analyse the problem of transmitting a number of unknown quantum states or one composite system in one go. We derive a lower bound on the performance of such process, measured in the entanglement fidelity. The obtained bound is effectively computable and outperforms the explicit values of the entanglement fidelity calculated for the pre-existing variants of the port-based protocols, allowing for teleportation of a much larger amount of quantum information. The comparison with the exact formulas and similar analysis for the probabilistic scheme is also discussed. In particular, we present the closed-form expressions for the entanglement fidelity and for the probability of success in the probabilistic scheme in the qubit case in the picture of the spin angular momentum.Piotr KopszakMarek MozrzymasMichał StudzińskiMichał HorodeckiVerein zur Förderung des Open Access Publizierens in den QuantenwissenschaftenarticlePhysicsQC1-999ENQuantum, Vol 5, p 576 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Piotr Kopszak Marek Mozrzymas Michał Studziński Michał Horodecki Multiport based teleportation – transmission of a large amount of quantum information
description	We analyse the problem of transmitting a number of unknown quantum states or one composite system in one go. We derive a lower bound on the performance of such process, measured in the entanglement fidelity. The obtained bound is effectively computable and outperforms the explicit values of the entanglement fidelity calculated for the pre-existing variants of the port-based protocols, allowing for teleportation of a much larger amount of quantum information. The comparison with the exact formulas and similar analysis for the probabilistic scheme is also discussed. In particular, we present the closed-form expressions for the entanglement fidelity and for the probability of success in the probabilistic scheme in the qubit case in the picture of the spin angular momentum.
format	article
author	Piotr Kopszak Marek Mozrzymas Michał Studziński Michał Horodecki
author_facet	Piotr Kopszak Marek Mozrzymas Michał Studziński Michał Horodecki
author_sort	Piotr Kopszak
title	Multiport based teleportation – transmission of a large amount of quantum information
title_short	Multiport based teleportation – transmission of a large amount of quantum information
title_full	Multiport based teleportation – transmission of a large amount of quantum information
title_fullStr	Multiport based teleportation – transmission of a large amount of quantum information
title_full_unstemmed	Multiport based teleportation – transmission of a large amount of quantum information
title_sort	multiport based teleportation – transmission of a large amount of quantum information
publisher	Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
publishDate	2021
url	https://doaj.org/article/2d44df9a91f24defb0e27ccb1576ba82
work_keys_str_mv	AT piotrkopszak multiportbasedteleportationtransmissionofalargeamountofquantuminformation AT marekmozrzymas multiportbasedteleportationtransmissionofalargeamountofquantuminformation AT michałstudzinski multiportbasedteleportationtransmissionofalargeamountofquantuminformation AT michałhorodecki multiportbasedteleportationtransmissionofalargeamountofquantuminformation
_version_	1718432052935655424

Multiport based teleportation – transmission of a large amount of quantum information

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