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Quantum dots in planar cavities - Single and entangled photon sources

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paperpeer-review

  • Robert Young
  • Mark Stevenson
  • Paola Atkinson
  • Ken Cooper
  • David Ritchie
  • Andrew Shields


We show that single InAs quantum dots embedded in a planar cavity, formed by mismatched sets of GaAs/AlAs distributed Bragg reflectors, can be a useful source of triggered single photons as well as polarisation-entangled photon pairs. The former is demonstrated with a second order correlation function under 0.1 and the latter with a fidelity exceeding 70%. Such quantum dot devices may be useful in quantum communications and quantum information processing.