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Transform-limited single photons from a single quantum dot

Author

Listed:
  • Andreas V. Kuhlmann

    (University of Basel)

  • Jonathan H. Prechtel

    (University of Basel)

  • Julien Houel

    (University of Basel
    Institut Lumière Matière (ILM), UMR5306 Université Lyon 1/CNRS, Université de Lyon)

  • Arne Ludwig

    (Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum)

  • Dirk Reuter

    (Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum
    Universität Paderborn)

  • Andreas D. Wieck

    (Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum)

  • Richard J. Warburton

    (University of Basel)

Abstract

Developing a quantum photonics network requires a source of very-high-fidelity single photons. An outstanding challenge is to produce a transform-limited single-photon emitter to guarantee that single photons emitted far apart in the time domain are truly indistinguishable. This is particularly difficult in the solid-state as the complex environment is the source of noise over a wide bandwidth. A quantum dot is a robust, fast, bright and narrow-linewidth emitter of single photons; layer-by-layer growth and subsequent nano-fabrication allow the electronic and photonic states to be engineered. This represents a set of features not shared by any other emitter but transform-limited linewidths have been elusive. Here, we report transform-limited linewidths measured on second timescales, primarily on the neutral exciton but also on the charged exciton close to saturation. The key feature is control of the nuclear spins, which dominate the exciton dephasing via the Overhauser field.

Suggested Citation

  • Andreas V. Kuhlmann & Jonathan H. Prechtel & Julien Houel & Arne Ludwig & Dirk Reuter & Andreas D. Wieck & Richard J. Warburton, 2015. "Transform-limited single photons from a single quantum dot," Nature Communications, Nature, vol. 6(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9204
    DOI: 10.1038/ncomms9204
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    Cited by:

    1. P. Laccotripes & T. Müller & R. M. Stevenson & J. Skiba-Szymanska & D. A. Ritchie & A. J. Shields, 2024. "Spin-photon entanglement with direct photon emission in the telecom C-band," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. L. Wells & T. Müller & R. M. Stevenson & J. Skiba-Szymanska & D. A. Ritchie & A. J. Shields, 2023. "Coherent light scattering from a telecom C-band quantum dot," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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