On-chip excitation of single germanium vacancies in nanodiamonds embedded in plasmonic waveguides

Hamidreza Siampour; Shailesh Kumar; Valery A. Davydov; Liudmila F. Kulikova; Viatcheslav N. Agafonov; Sergey I. Bozhevolnyi

doi:10.1038/s41377-018-0062-5

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On-chip excitation of single germanium vacancies in nanodiamonds embedded in plasmonic waveguides

Original Articles

- On-chip excitation of single germanium vacancies in nanodiamonds embedded in plasmonic waveguides
- On-chip excitation of single germanium vacancies in nanodiamonds embedded in plasmonic waveguides
- 光：科学与应用 2018年7卷第5期页码：587-595
- Affiliations：
  
  1.Centre for Nano Optics, University of Southern Denmark, Campusvej 55, Odense M, DK-5230, Denmark
  2.L.F. Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow, 142190, Russia
  3.GREMAN, Université de Tours, UMR CNRS CEA 6157, 37200, Tours, France
- Author bio：
  
  Hamidreza Siampour (hasa@mci.sdu.dk)
- Funds：
- DOI：10.1038/s41377-018-0062-5
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Hamidreza Siampour, Shailesh Kumar, Valery A. Davydov, 等. On-chip excitation of single germanium vacancies in nanodiamonds embedded in plasmonic waveguides[J]. 光：科学与应用, 2018,7(5):587-595.

Siampour, H. et al. On-chip excitation of single germanium vacancies in nanodiamonds embedded in plasmonic waveguides. Light: Science & Applications, 5, 587-595 (2018).
Hamidreza Siampour, Shailesh Kumar, Valery A. Davydov, 等. On-chip excitation of single germanium vacancies in nanodiamonds embedded in plasmonic waveguides[J]. 光：科学与应用, 2018,7(5):587-595. DOI： 10.1038/s41377-018-0062-5.

Siampour, H. et al. On-chip excitation of single germanium vacancies in nanodiamonds embedded in plasmonic waveguides. Light: Science & Applications, 5, 587-595 (2018). DOI： 10.1038/s41377-018-0062-5.

摘要

Abstract

Monolithic integration of quantum emitters in nanoscale plasmonic circuitry requires low-loss plasmonic configurations capable of confining light well below the diffraction limit. We demonstrated on-chip remote excitation of nanodiamond-embedded single quantum emitters by plasmonic modes of dielectric ridges atop colloidal silver crystals. The nanodiamonds were produced to incorporate single germanium-vacancy (GeV) centres, providing bright, spectrally narrow and stable single-photon sources suitable for highly integrated circuits. Using electron-beam lithography with hydrogen silsesquioxane (HSQ) resist, dielectric-loaded surface plasmon polariton waveguides (DLSPPWs) were fabricated on single crystalline silver plates to contain those of deposited nanodiamonds that are found to feature appropriate single GeV centres. The low-loss plasmonic configuration enabled the 532-nm pump laser light to propagate on-chip in the DLSPPW and reach to an embedded nanodiamond where a single GeV centre was incorporated. The remote GeV emitter was thereby excited and coupled to spatially confined DLSPPW modes with an outstanding figure-of-merit of 180 due to a ~six-fold Purcell enhancement, ~56% coupling efficiency and ~33 μm transmission length, thereby opening new avenues for the implementation of nanoscale functional quantum devices.

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