Towards optimal single-photon sources from polarized microcavities

Hui Wang; Yu-Ming He; T.-H. Chung; Hai Hu; Ying Yu; Si Chen; Xing Ding; M.-C. Chen; Jian Qin; Xiaoxia Yang; Run-Ze Liu; Z.-C. Duan; J.-P. Li; S. Gerhardt; K. Winkler; J. Jurkat; Lin-Jun Wang; Niels Gregersen; Yong-Heng Huo; Qing Dai; Siyuan Yu; Sven Höfling; Chao-Yang Lu; Jian-Wei Pan

doi:10.1038/s41566-019-0494-3

Towards optimal single-photon sources from polarized microcavities

Hui Wang, Yu-Ming He, T.-H. Chung, Hai Hu, Ying Yu, Si Chen, Xing Ding, M.-C. Chen, Jian Qin, Xiaoxia Yang, Run-Ze Liu, Z.-C. Duan, J.-P. Li, S. Gerhardt, K. Winkler, J. Jurkat, Lin-Jun Wang, Niels Gregersen, Yong-Heng Huo, Qing DaiSiyuan Yu, Sven Höfling, Chao-Yang Lu, Jian-Wei Pan

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Abstract

An 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.

Original language	English
Number of pages	6
Journal	Nature Photonics
DOIs	https://doi.org/10.1038/s41566-019-0494-3
Publication status	Published - 5 Aug 2019

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@article{6fdc92f1bae743979e87cd4aaf9fd951,

title = "Towards optimal single-photon sources from polarized microcavities",

abstract = "An optimal single-photon source should deterministically deliver one, and only one, photon at a time, with no trade-off between the source{\textquoteright}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.",

author = "Hui Wang and Yu-Ming He and T.-H. Chung and Hai Hu and Ying Yu and Si Chen and Xing Ding and M.-C. Chen and Jian Qin and Xiaoxia Yang and Run-Ze Liu and Z.-C. Duan and J.-P. Li and S. Gerhardt and K. Winkler and J. Jurkat and Lin-Jun Wang and Niels Gregersen and Yong-Heng Huo and Qing Dai and Siyuan Yu and Sven H{\"o}fling and Chao-Yang Lu and Jian-Wei Pan",

year = "2019",

month = aug,

day = "5",

doi = "10.1038/s41566-019-0494-3",

language = "English",

journal = "Nature Photonics",

issn = "1749-4885",

publisher = "Nature publishing group",

}

Wang, 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/s41566-019-0494-3

TY - JOUR

T1 - Towards optimal single-photon sources from polarized microcavities

AU - Wang, Hui

AU - He, Yu-Ming

AU - Chung, T.-H.

AU - Hu, Hai

AU - Yu, Ying

AU - Chen, Si

AU - Ding, Xing

AU - Chen, M.-C.

AU - Qin, Jian

AU - Yang, Xiaoxia

AU - Liu, Run-Ze

AU - Duan, Z.-C.

AU - Li, J.-P.

AU - Gerhardt, S.

AU - Winkler, K.

AU - Jurkat, J.

AU - Wang, Lin-Jun

AU - Gregersen, Niels

AU - Huo, Yong-Heng

AU - Dai, Qing

AU - Yu, Siyuan

AU - Höfling, Sven

AU - Lu, Chao-Yang

AU - Pan, Jian-Wei

PY - 2019/8/5

Y1 - 2019/8/5

N2 - An 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.

AB - An 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.

U2 - 10.1038/s41566-019-0494-3

DO - 10.1038/s41566-019-0494-3

M3 - Article

SN - 1749-4885

JO - Nature Photonics

JF - Nature Photonics

ER -

Towards optimal single-photon sources from polarized microcavities

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