Single quantum dots emit single photons at a time: Antibunching experiments

  • Zwiller V
  • Blom H
  • Jonsson P
 et al. 
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Abstract

We have studied the photoluminescence correlation from a single InAs/GaAs self-assembled Stranski–Krastanow quantum dot under continuous, as well as under pulsed excitation. Under weak continuous excitation, where the single dot luminescence is due primarily to single exciton recombinations, antibunching is observed in the single dot emission correlation. Under weak pulsed excitation, the number of photons emitted by the quantum dot per pulse is close to one. We present data obtained under both conditions and are able to show that devices based on single quantum dots can be used to generate single photons. © 2001 American Institute of Physics.

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Authors

  • Valéry Zwiller

  • Hans Blom

  • Per Jonsson

  • Nikolay Panev

  • Sören Jeppesen

  • Tedros Tsegaye

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