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Related Experiment Videos

Quantum optical studies on individual acceptor bound excitons in a semiconductor.

S Strauf1, P Michler, M Klude

  • 1Institute of Solid State Physics, Semiconductor Optics, University of Bremen, P.O. Box 330440, 28334 Bremen, Germany.

Physical Review Letters
|October 26, 2002
PubMed
Summary

Researchers generated triggered single photons using nitrogen-bound excitons in a semiconductor. These photons, emitted at a specific energy, show photon antibunching, indicating their potential for quantum optics experiments.

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Area of Science:

  • Solid-state physics
  • Quantum optics
  • Materials science

Background:

  • Single photon sources are crucial for quantum technologies.
  • Semiconductor quantum wells offer potential for controlled light emission.
  • Nitrogen-vacancy centers are explored for quantum applications.

Purpose of the Study:

  • To demonstrate triggered single photon generation from nitrogen-bound excitons.
  • To characterize the energy and coherence of emitted photons.
  • To assess the suitability of this system for cavity quantum electrodynamics.

Main Methods:

  • Utilizing a zinc selenide (ZnSe) quantum well structure with embedded nitrogen atoms.
  • Employing nonresonant optical pumping at 82 MHz and low temperatures (4 K).

Related Experiment Videos

  • Analyzing photoluminescence spectra for resolution-limited lines and photon antibunching.

    • Main Results:

    • Successfully generated triggered single photons via radiative recombination of single nitrogen-bound excitons.
    • Observed resolution-limited photoluminescence lines with a linewidth of 280 micro eV.
    • Demonstrated photon antibunching, confirming single photon emission under continuous optical pumping.

    Conclusions:

    • Single nitrogen-bound excitons in ZnSe quantum wells are a viable source of triggered single photons.
    • The system exhibits properties suitable for advanced quantum optical experiments, including cavity quantum electrodynamics.
    • This work contributes to the development of scalable and efficient single photon sources.