Single photons on demand from novel site-controlled GaAsN/GaAsN:H quantum dots

Nano Lett. 2014 Mar 12;14(3):1275-80. doi: 10.1021/nl404196y. Epub 2014 Feb 5.


We demonstrate triggered single-photon emission from a novel system of site-controlled quantum dots (QDs), fabricated by exploiting the hydrogen-assisted, spatially selective passivation of N atoms in dilute nitride semiconductors. Evidence of this nonclassical behavior is provided by the observation of strong antibunching in the autocorrelation histogram of the QD exciton emission line. This class of site-controlled quantum emitters can be exploited for the fabrication of new hybrid QD-nanocavity systems of interest for future quantum technologies.

Publication types

  • Research Support, Non-U.S. Gov't