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Single-photon emission from single-electron transport in a SAW-driven lateral light-emitting diode

Author

Listed:
  • Tzu-Kan Hsiao

    (University of Cambridge
    Delft University of Technology)

  • Antonio Rubino

    (University of Cambridge
    LS Instruments AG)

  • Yousun Chung

    (University of Cambridge
    University of New South Wales)

  • Seok-Kyun Son

    (University of Cambridge
    Mokpo National University)

  • Hangtian Hou

    (University of Cambridge)

  • Jorge Pedrós

    (University of Cambridge
    Universidad Polit écnica de Madrid)

  • Ateeq Nasir

    (University of Cambridge
    National Physical Laboratory)

  • Gabriel Éthier-Majcher

    (University of Cambridge)

  • Megan J. Stanley

    (University of Cambridge
    University of California)

  • Richard T. Phillips

    (University of Cambridge)

  • Thomas A. Mitchell

    (University of Cambridge)

  • Jonathan P. Griffiths

    (University of Cambridge)

  • Ian Farrer

    (University of Cambridge
    University of Sheffield)

  • David A. Ritchie

    (University of Cambridge)

  • Christopher J. B. Ford

    (University of Cambridge)

Abstract

The long-distance quantum transfer between electron-spin qubits in semiconductors is important for realising large-scale quantum computing circuits. Electron-spin to photon-polarisation conversion is a promising technology for achieving free-space or fibre-coupled quantum transfer. In this work, using only regular lithography techniques on a conventional 15 nm GaAs quantum well, we demonstrate acoustically-driven generation of single photons from single electrons, without the need for a self-assembled quantum dot. In this device, a single electron is carried in a potential minimum of a surface acoustic wave (SAW) and is transported to a region of holes to form an exciton. The exciton then decays and creates a single optical photon within 100 ps. This SAW-driven electroluminescence, without optimisation, yields photon antibunching with g(2)(0) = 0.39 ± 0.05 in the single-electron limit (g(2)(0) = 0.63 ± 0.03 in the raw histogram). Our work marks the first step towards electron-to-photon (spin-to-polarisation) qubit conversion for scaleable quantum computing architectures.

Suggested Citation

  • Tzu-Kan Hsiao & Antonio Rubino & Yousun Chung & Seok-Kyun Son & Hangtian Hou & Jorge Pedrós & Ateeq Nasir & Gabriel Éthier-Majcher & Megan J. Stanley & Richard T. Phillips & Thomas A. Mitchell & Jonat, 2020. "Single-photon emission from single-electron transport in a SAW-driven lateral light-emitting diode," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-14560-1
    DOI: 10.1038/s41467-020-14560-1
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    Cited by:

    1. Paul L. J. Helgers & James A. H. Stotz & Haruki Sanada & Yoji Kunihashi & Klaus Biermann & Paulo V. Santos, 2022. "Flying electron spin control gates," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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