Quantum teleportation with imperfect quantum dots

Abstract Efficient all-photonic quantum teleportation requires fast and deterministic sources of highly indistinguishable and entangled photons. Solid-state-based quantum emitters—notably semiconductor quantum dots—are a promising candidate for the role. However, despite the remarkable progress in n...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	F. Basso Basset, F. Salusti, L. Schweickert, M. B. Rota, D. Tedeschi, S. F. Covre da Silva, E. Roccia, V. Zwiller, K. D. Jöns, A. Rastelli, R. Trotta
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
Acceso en línea:	https://doaj.org/article/cb07bd127a6d4bf4b83d1267146acf6c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:cb07bd127a6d4bf4b83d1267146acf6c
record_format	dspace
spelling	oai:doaj.org-article:cb07bd127a6d4bf4b83d1267146acf6c2021-12-02T13:48:54ZQuantum teleportation with imperfect quantum dots10.1038/s41534-020-00356-02056-6387https://doaj.org/article/cb07bd127a6d4bf4b83d1267146acf6c2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41534-020-00356-0https://doaj.org/toc/2056-6387Abstract Efficient all-photonic quantum teleportation requires fast and deterministic sources of highly indistinguishable and entangled photons. Solid-state-based quantum emitters—notably semiconductor quantum dots—are a promising candidate for the role. However, despite the remarkable progress in nanofabrication, proof-of-concept demonstrations of quantum teleportation have highlighted that imperfections of the emitter still place a major roadblock in the way of applications. Here, rather than focusing on source optimization strategies, we deal with imperfections and study different teleportation protocols with the goal of identifying the one with maximal teleportation fidelity. Using a quantum dot with sub-par values of entanglement and photon indistinguishability, we show that the average teleportation fidelity can be raised from below the classical limit to 0.842(14), adopting a polarization-selective Bell state measurement and moderate spectral filtering. Our results, which are backed by a theoretical model that quantitatively explains the experimental findings, loosen the very stringent requirements set on the ideal entangled-photon source and highlight that imperfect quantum dots can still have a say in teleportation-based quantum communication architectures.F. Basso BassetF. SalustiL. SchweickertM. B. RotaD. TedeschiS. F. Covre da SilvaE. RocciaV. ZwillerK. D. JönsA. RastelliR. TrottaNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 7, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
spellingShingle	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95 F. Basso Basset F. Salusti L. Schweickert M. B. Rota D. Tedeschi S. F. Covre da Silva E. Roccia V. Zwiller K. D. Jöns A. Rastelli R. Trotta Quantum teleportation with imperfect quantum dots
description	Abstract Efficient all-photonic quantum teleportation requires fast and deterministic sources of highly indistinguishable and entangled photons. Solid-state-based quantum emitters—notably semiconductor quantum dots—are a promising candidate for the role. However, despite the remarkable progress in nanofabrication, proof-of-concept demonstrations of quantum teleportation have highlighted that imperfections of the emitter still place a major roadblock in the way of applications. Here, rather than focusing on source optimization strategies, we deal with imperfections and study different teleportation protocols with the goal of identifying the one with maximal teleportation fidelity. Using a quantum dot with sub-par values of entanglement and photon indistinguishability, we show that the average teleportation fidelity can be raised from below the classical limit to 0.842(14), adopting a polarization-selective Bell state measurement and moderate spectral filtering. Our results, which are backed by a theoretical model that quantitatively explains the experimental findings, loosen the very stringent requirements set on the ideal entangled-photon source and highlight that imperfect quantum dots can still have a say in teleportation-based quantum communication architectures.
format	article
author	F. Basso Basset F. Salusti L. Schweickert M. B. Rota D. Tedeschi S. F. Covre da Silva E. Roccia V. Zwiller K. D. Jöns A. Rastelli R. Trotta
author_facet	F. Basso Basset F. Salusti L. Schweickert M. B. Rota D. Tedeschi S. F. Covre da Silva E. Roccia V. Zwiller K. D. Jöns A. Rastelli R. Trotta
author_sort	F. Basso Basset
title	Quantum teleportation with imperfect quantum dots
title_short	Quantum teleportation with imperfect quantum dots
title_full	Quantum teleportation with imperfect quantum dots
title_fullStr	Quantum teleportation with imperfect quantum dots
title_full_unstemmed	Quantum teleportation with imperfect quantum dots
title_sort	quantum teleportation with imperfect quantum dots
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/cb07bd127a6d4bf4b83d1267146acf6c
work_keys_str_mv	AT fbassobasset quantumteleportationwithimperfectquantumdots AT fsalusti quantumteleportationwithimperfectquantumdots AT lschweickert quantumteleportationwithimperfectquantumdots AT mbrota quantumteleportationwithimperfectquantumdots AT dtedeschi quantumteleportationwithimperfectquantumdots AT sfcovredasilva quantumteleportationwithimperfectquantumdots AT eroccia quantumteleportationwithimperfectquantumdots AT vzwiller quantumteleportationwithimperfectquantumdots AT kdjons quantumteleportationwithimperfectquantumdots AT arastelli quantumteleportationwithimperfectquantumdots AT rtrotta quantumteleportationwithimperfectquantumdots
_version_	1718392465790074880

Quantum teleportation with imperfect quantum dots

Ejemplares similares