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Quantum dots for single photon and photon pair technology

Research output: Contribution in Book/Report/ProceedingsChapter (peer-reviewed)


  • R. Mark Stevenson
  • Robert Young
  • R. M. Thompson
  • Zhillang Yuan
  • B. E. Kardynal
  • I. Farrer
  • M. B. Ward
  • D. A. Ritchie
  • A. J. Shields

Associated organisational unit

Publication date2006
Host publicationQuantum Computing in Solid State Systems
EditorsB. Ruggiero, P. Delsing , C. Granata, Y. Pashkin, P. Silvestrini
Place of publicationNew York
Number of pages10
ISBN (Print)978-0-387-26332-8
Original languageEnglish


The excitation of a quantum dot from its ground state depends on the probabilistic nature of carrier capture, and thus radiative decay can occur via a multi photon cascade. It is also possible that non-radiative initial exciton states can be formed when the spins of the component electron and heavy hole have the same sign. Time integrated and time resolved micro-photoluminescence experiments are presented that reveal the broader properties of single photon and multi-photon emission from InAs quantum dots, including single photon emission, polarisation correlated photon emission, and dark state blocking, and their implications in terms of quantum information technology are discussed.