Solid-state ensemble of highly entangled photon sources at rubidium atomic transitions

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dc.identifier.uri Keil, Robert Zopf, Michael Chen, Yan Höfer, B. Zhang, Jiaxiang Ding, Fei Schmidt, Oliver G. 2017-07-14T12:33:38Z 2017-07-14T12:33:38Z 2017
dc.identifier.citation Keil, R.; Zopf, M.; Chen, Y.; Höfer, B.; Zhang, J. et al.: Solid-state ensemble of highly entangled photon sources at rubidium atomic transitions. In: Nature Communications 8 (2017), 15501. DOI:
dc.description.abstract Semiconductor InAs/GaAs quantum dots grown by the Stranski-Krastanov method are among the leading candidates for the deterministic generation of polarization-entangled photon pairs. Despite remarkable progress in the past 20 years, many challenges still remain for this material, such as the extremely low yield, the low degree of entanglement and the large wavelength distribution. Here, we show that with an emerging family of GaAs/AlGaAs quantum dots grown by droplet etching and nanohole infilling, it is possible to obtain a large ensemble of polarization-entangled photon emitters on a wafer without any post-growth tuning. Under pulsed resonant two-photon excitation, all measured quantum dots emit single pairs of entangled photons with ultra-high purity, high degree of entanglement and ultra-narrow wavelength distribution at rubidium transitions. Therefore, this material system is an attractive candidate for the realization of a solid-state quantum repeater - among many other key enabling quantum photonic elements. © The Author(s) 2017. eng
dc.description.sponsorship ERC/QD-NOMS
dc.description.sponsorship BMBF/Q.Com-H
dc.description.sponsorship EU/FP7/2007–2013/HANAS
dc.language.iso eng
dc.publisher London : Nature Publishing Group
dc.relation.ispartofseries Nature Communications 8 (2017)
dc.rights CC BY 4.0 Unported
dc.subject droplet eng
dc.subject etching eng
dc.subject photon flux density eng
dc.subject quantum mechanics eng
dc.subject rubidium eng
dc.subject semiconductor industry eng
dc.subject wavelength eng
dc.subject.ddc 500 | Naturwissenschaften ger
dc.title Solid-state ensemble of highly entangled photon sources at rubidium atomic transitions eng
dc.type Article
dc.type Text
dc.relation.essn 2041-1723
dc.bibliographicCitation.volume 8
dc.bibliographicCitation.firstPage 15501
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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