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Entangled photons from the biexciton cascade of quantum dots

Research output: Contribution to journalJournal article

Published

  • R. J. Young
  • R. M. Stevenson
  • A. J. Shields
  • P. Atkinson
  • K. Cooper
  • D. A. Ritchie

Associated organisational unit

Article number081711
Journal publication date15/04/2007
JournalJournal of Applied Physics
Journal number8
Volume101
Number of pages4
Pages-
Original languageEnglish

Abstract

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.