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dc.contributor.authorWang, Hui
dc.contributor.authorHe, Yu-Ming
dc.contributor.authorChung, T.-H.
dc.contributor.authorHu, Hai
dc.contributor.authorYu, Ying
dc.contributor.authorChen, Si
dc.contributor.authorDing, Xing
dc.contributor.authorChen, M.-C.
dc.contributor.authorQin, Jian
dc.contributor.authorYang, Xiaoxia
dc.contributor.authorLiu, Run-Ze
dc.contributor.authorDuan, Z.-C.
dc.contributor.authorLi, J.-P.
dc.contributor.authorGerhardt, S.
dc.contributor.authorWinkler, K.
dc.contributor.authorJurkat, J.
dc.contributor.authorWang, Lin-Jun
dc.contributor.authorGregersen, Niels
dc.contributor.authorHuo, Yong-Heng
dc.contributor.authorDai, Qing
dc.contributor.authorYu, Siyuan
dc.contributor.authorHöfling, Sven
dc.contributor.authorLu, Chao-Yang
dc.contributor.authorPan, Jian-Wei
dc.date.accessioned2020-02-05T00:35:58Z
dc.date.available2020-02-05T00:35:58Z
dc.date.issued2019-08-05
dc.identifier259361588
dc.identifier6fdc92f1-bae7-4397-9e87-cd4aaf9fd951
dc.identifier85070334081
dc.identifier000493317900012
dc.identifier.citationWang , H , He , Y-M , Chung , T-H , Hu , H , Yu , Y , Chen , S , Ding , X , Chen , M-C , Qin , J , Yang , X , Liu , R-Z , Duan , Z-C , Li , J-P , Gerhardt , S , Winkler , K , Jurkat , J , Wang , L-J , Gregersen , N , Huo , Y-H , Dai , Q , Yu , S , Höfling , S , Lu , C-Y & Pan , J-W 2019 , ' Towards optimal single-photon sources from polarized microcavities ' , Nature Photonics . https://doi.org/10.1038/s41566-019-0494-3en
dc.identifier.issn1749-4885
dc.identifier.urihttps://hdl.handle.net/10023/19410
dc.description.abstractAn optimal single-photon source should deterministically deliver one, and only one, photon at a time, with no trade-off between the source’s efficiency and the photon indistinguishability. However, all reported solid-state sources of indistinguishable single photons had to rely on polarization filtering, which reduced the efficiency by 50%, fundamentally limiting the scaling of photonic quantum technologies. Here, we overcome this long-standing challenge by coherently driving quantum dots deterministically coupled to polarization-selective Purcell microcavities. We present two examples: narrowband, elliptical micropillars and broadband, elliptical Bragg gratings. A polarization-orthogonal excitation–collection scheme is designed to minimize the polarization filtering loss under resonant excitation. We demonstrate a polarized single-photon efficiency of 0.60 ± 0.02 (0.56 ± 0.02), a single-photon purity of 0.975 ± 0.005 (0.991 ± 0.003) and an indistinguishability of 0.975 ± 0.006 (0.951 ± 0.005) for the micropillar (Bragg grating) device. Our work provides promising solutions for truly optimal single-photon sources combining near-unity indistinguishability and near-unity system efficiency simultaneously.
dc.format.extent6
dc.format.extent915044
dc.language.isoeng
dc.relation.ispartofNature Photonicsen
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.subjectNDASen
dc.subject.lccQCen
dc.subject.lccTKen
dc.titleTowards optimal single-photon sources from polarized microcavitiesen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doi10.1038/s41566-019-0494-3
dc.description.statusPeer revieweden
dc.date.embargoedUntil2020-02-05


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