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dc.contributor.authorRau, Markus
dc.contributor.authorHeindel, Tobias
dc.contributor.authorUnsleber, Sebastian
dc.contributor.authorBraun, Tristan
dc.contributor.authorFischer, Julian
dc.contributor.authorFrick, Stefan
dc.contributor.authorNauerth, Sebastian
dc.contributor.authorSchneider, Christian
dc.contributor.authorVest, Gwenaelle
dc.contributor.authorReitzenstein, Stephan
dc.contributor.authorKamp, Martin
dc.contributor.authorForchel, Alfred
dc.contributor.authorHoefling, Sven
dc.contributor.authorWeinfurter, Harald
dc.identifier.citationRau , M , Heindel , T , Unsleber , S , Braun , T , Fischer , J , Frick , S , Nauerth , S , Schneider , C , Vest , G , Reitzenstein , S , Kamp , M , Forchel , A , Hoefling , S & Weinfurter , H 2014 , ' Free space quantum key distribution over 500 meters using electrically driven quantum dot single-photon sources-a proof of principle experiment ' , New Journal of Physics , vol. 16 , 043003 .
dc.identifier.otherPURE: 129142081
dc.identifier.otherPURE UUID: 6aa63a16-2bca-460c-9126-debd6c0d52f9
dc.identifier.otherWOS: 000334513300001
dc.identifier.otherScopus: 84899551595
dc.descriptionThe authors gratefully acknowledge expert sample preparation by M Emmerling and A Wolf as well as financial support by the German Ministry of Education and Research through the project QPENS and QUASAR.en
dc.description.abstractHighly efficient single-photon sources (SPS) can increase the secure key rate of quantum key distribution (QKD) systems compared to conventional attenuated laser systems. Here we report on a free space QKD test using an electrically driven quantum dot single-photon source (QD SPS) that does not require a separate laser setup for optical pumping and thus allows for a simple and compact SPS QKD system. We describe its implementation in our 500 m free space QKD system in downtown Munich. Emulating a BB84 protocol operating at a repetition rate of 125 MHz, we could achieve sifted key rates of 5-17 kHz with error ratios of 6-9% and g((2))(0)-values of 0.39-0.76.
dc.relation.ispartofNew Journal of Physicsen
dc.rights© 2014 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. This is an Open Access article distributed in accordance with the terms of the Creative Commons Attribution (CC BY 3.0) license, which permits others to distribute, remix, adapt and build upon this work, for commercial use, provided the original work is properly citeden
dc.subjectQuantum key distributionen
dc.subjectQuantum dotsen
dc.subjectElectrically drivenen
dc.subjectFree spaceen
dc.subjectQC Physicsen
dc.titleFree space quantum key distribution over 500 meters using electrically driven quantum dot single-photon sources-a proof of principle experimenten
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.description.statusPeer revieweden

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