Open AccessHigh performance single photon sources from photolithographically defined pillar microcavities
Author(s) -
A. J. Bennett,
D. C. Unitt,
P. Atkinson,
D. A. Ritchie,
A. J. Shields
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.000050
Subject(s) - optics , photon , optoelectronics , purcell effect , materials science , quantum dot , spontaneous emission , pillar , laser , physics , structural engineering , engineering
We demonstrate that single photons can be generated from single InAs/GaAs quantum dots in photolithographically defined pillar microcavities. Pillars with a 1.9 microm diameter cavity show a four fold enhancement in the radiative decay rate due to the Purcell effect and a photon collection efficiency into a lens of up to 10%. Measurements of the second order correlation function reveal a greater than fifty fold reduction in the multi-photon emission rate compared to a laser of the same intensity.