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Entangled photons from the biexciton cascade of quantum dots

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  • R. J. Young
  • R. M. Stevenson
  • A. J. Shields
  • P. Atkinson
  • K. Cooper
  • D. A. Ritchie
Article number081711
<mark>Journal publication date</mark>15/04/2007
<mark>Journal</mark>Journal of Applied Physics
Issue number8
Number of pages4
Pages (from-to)-
Publication StatusPublished
<mark>Original language</mark>English


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 polarization-entangled photon pairs. We demonstrate this with a fidelity exceeding 70% for the expected entangled state. Quantum dot based devices may therefore be of great use in quantum communications and quantum information processing.