High brightness single photon sources based on photonic wires

J. Claudon, J. Bleuse, M. Bazin, N.S. Malik, P. Jaffrennou, P. Lalanne, Niels Gregersen, J.M. Gerard

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


We present a novel single-photon-source based on the emission of a semiconductor quantum dot embedded in a single-mode photonic wire. This geometry ensures a very large coupling (> 95%) of the spontaneous emission to the guided mode. Numerical simulations show that a photon collection efficiency as large as 90% can be obtained for engineered nanowires with a tapered tip and a metallic bottom mirror coated by a thin dielectric layer. Experimentally, a record-high efficiency of 75 ± 10% (for a NA = 0.75 collection optics) has been measured for an InAs quantum dot embedded in such a nanowire, made of GaAs and defined by reactive-ion etching.
Original languageEnglish
Title of host publicationConference proceedings, ICTON
Publication date2009
ISBN (Print)978-1-4244-4826-5
Publication statusPublished - 2009
Event11th International Conference on Transparent Optical Networks - Azores, Portugal
Duration: 28 Jun 20092 Jul 2009


Conference11th International Conference on Transparent Optical Networks
Internet address


  • waveguide
  • tapering
  • quantum dot
  • nanowire
  • single photon source


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