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Complete quantum control of a single quantum dot spin using ultrafast optical pulses

Author

Listed:
  • David Press

    (E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA)

  • Thaddeus D. Ladd

    (E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
    National Institute of Informatics, Hitotsubashi 2-1-2, Chiyoda-ku, Tokyo 101-8403, Japan)

  • Bingyang Zhang

    (E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA)

  • Yoshihisa Yamamoto

    (E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
    National Institute of Informatics, Hitotsubashi 2-1-2, Chiyoda-ku, Tokyo 101-8403, Japan)

Abstract

Single spin caught in the light A single electron spin confined within a semiconductor nanostructure is an ideal qubit for quantum computing, as it is relatively stable against decoherence and is easily manipulated electrically or optically. Full quantum control involving initialization, spin rotation and detection, has been demonstrated previously using electrically controlled radio-frequency pulses, but this method will be too slow for the construction of quantum computing circuits operating at useful clock speeds. Optical manipulation of electron spin allows much faster operations and has the added advantage that it allows for an optical interface. Press et al. now achieve ultrafast optical control of electron spin in a quantum dot and demonstrate, in combination with optical initialization and detection, a single-qubit logic gate operation, involving a sequence of two optical pulses. Such high-speed operation could conceivably lead to quantum computing devices at gigahertz clock speeds.

Suggested Citation

  • David Press & Thaddeus D. Ladd & Bingyang Zhang & Yoshihisa Yamamoto, 2008. "Complete quantum control of a single quantum dot spin using ultrafast optical pulses," Nature, Nature, vol. 456(7219), pages 218-221, November.
    • Handle: RePEc:nat:nature:v:456:y:2008:i:7219:d:10.1038_nature07530
    DOI: 10.1038/nature07530
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    Citations

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    Cited by:

    1. Clemens Spinnler & Liang Zhai & Giang N. Nguyen & Julian Ritzmann & Andreas D. Wieck & Arne Ludwig & Alisa Javadi & Doris E. Reiter & Paweł Machnikowski & Richard J. Warburton & Matthias C. Löbl, 2021. "Optically driving the radiative Auger transition," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
    2. Kenji Shibata & Masaki Yoshida & Kazuhiko Hirakawa & Tomohiro Otsuka & Satria Zulkarnaen Bisri & Yoshihiro Iwasa, 2023. "Single PbS colloidal quantum dot transistors," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    3. Nadia O. Antoniadis & Mark R. Hogg & Willy F. Stehl & Alisa Javadi & Natasha Tomm & Rüdiger Schott & Sascha R. Valentin & Andreas D. Wieck & Arne Ludwig & Richard J. Warburton, 2023. "Cavity-enhanced single-shot readout of a quantum dot spin within 3 nanoseconds," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    4. J.-B. Trebbia & Q. Deplano & P. Tamarat & B. Lounis, 2022. "Tailoring the superradiant and subradiant nature of two coherently coupled quantum emitters," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    5. Łukasz Dusanowski & Cornelius Nawrath & Simone L. Portalupi & Michael Jetter & Tobias Huber & Sebastian Klembt & Peter Michler & Sven Höfling, 2022. "Optical charge injection and coherent control of a quantum-dot spin-qubit emitting at telecom wavelengths," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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