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A quantum dot single-photon source with on-the-fly all-optical polarization control and timed emission

Author

Listed:
  • Dirk Heinze

    (Center for Optoelectronics and Photonics Paderborn (CeOPP), Universität Paderborn)

  • Dominik Breddermann

    (Center for Optoelectronics and Photonics Paderborn (CeOPP), Universität Paderborn)

  • Artur Zrenner

    (Center for Optoelectronics and Photonics Paderborn (CeOPP), Universität Paderborn)

  • Stefan Schumacher

    (Center for Optoelectronics and Photonics Paderborn (CeOPP), Universität Paderborn
    College of Optical Sciences, University of Arizona)

Abstract

Sources of single photons are key elements for applications in quantum information science. Among the different sources available, semiconductor quantum dots excel with their integrability in semiconductor on-chip solutions and the potential that photon emission can be triggered on demand. Usually, the photon is emitted from a single-exciton ground state. Polarization of the photon and time of emission are either probabilistic or pre-determined by electronic properties of the system. Here, we study the direct two-photon emission from the biexciton. The two-photon emission is enabled by a laser pulse driving the system into a virtual state inside the band gap. From this intermediate state, the single photon of interest is then spontaneously emitted. We show that emission through this higher-order transition provides a versatile approach to generate a single photon. Through the driving laser pulse, polarization state, frequency and emission time of the photon can be controlled on-the-fly.

Suggested Citation

  • Dirk Heinze & Dominik Breddermann & Artur Zrenner & Stefan Schumacher, 2015. "A quantum dot single-photon source with on-the-fly all-optical polarization control and timed emission," Nature Communications, Nature, vol. 6(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9473
    DOI: 10.1038/ncomms9473
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    Cited by:

    1. B. Jonas & D. Heinze & E. Schöll & P. Kallert & T. Langer & S. Krehs & A. Widhalm & K. D. Jöns & D. Reuter & S. Schumacher & A. Zrenner, 2022. "Nonlinear down-conversion in a single quantum dot," Nature Communications, Nature, vol. 13(1), pages 1-7, December.

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