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dc.contributor.authorAnderson, M.
dc.contributor.authorMüller, T.
dc.contributor.authorHuwer, J.
dc.contributor.authorSkiba-Szymanska, J.
dc.contributor.authorKrysa, A. B.
dc.contributor.authorStevenson, R. M.
dc.contributor.authorHeffernan, J.
dc.contributor.authorRitchie, D. A.
dc.contributor.authorShields, A. J.
dc.date.accessioned2021-02-12T17:30:08Z
dc.date.available2021-02-12T17:30:08Z
dc.date.issued2020-01-31
dc.date.submitted2019-08-21
dc.identifier.others41534-020-0249-5
dc.identifier.other249
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/317556
dc.description.abstractAbstract: A practical way to link separate nodes in quantum networks is to send photons over the standard telecom fibre network. This requires sub-Poissonian photon sources in the wavelength band around 1550 nm, with photon coherence times sufficient to enable the many interference-based technologies at the heart of quantum networks. Here, we show that droplet epitaxy InAs/InP quantum dots emitting in the telecom C-band can provide photons with coherence times exceeding 1 ns under low power non-resonant excitation, and demonstrate that these coherence times enable near-optimal interference with a C-band polarisation-encoded laser qubit, with visibilities only limited by the quantum dot multiphoton emission. Using entangled photons, we further show teleportation of such qubits in six different bases with average postselected fidelity reaching 88.3 ± 4.0%. Beyond direct applications in long-distance quantum communication, the high degree of coherence in these quantum dots is promising for future spin-based telecom quantum network applications.
dc.languageen
dc.publisherNature Publishing Group UK
dc.rightsAttribution 4.0 International (CC BY 4.0)en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectArticle
dc.subject/639/766/483/481
dc.subject/639/766/400/482
dc.subject/639/766/483/3925
dc.subject/639/766/1130/2799
dc.subjectarticle
dc.titleQuantum teleportation using highly coherent emission from telecom C-band quantum dots
dc.typeArticle
dc.date.updated2021-02-12T17:30:08Z
prism.issueIdentifier1
prism.publicationNamenpj Quantum Information
prism.volume6
dc.identifier.doi10.17863/CAM.64669
dcterms.dateAccepted2020-01-09
rioxxterms.versionofrecord10.1038/s41534-020-0249-5
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidMüller, T. [0000-0003-0379-6545]
dc.contributor.orcidKrysa, A. B. [0000-0001-8320-7354]
dc.contributor.orcidRitchie, D. A. [0000-0002-9844-8350]
dc.identifier.eissn2056-6387


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's licence is described as Attribution 4.0 International (CC BY 4.0)