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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 17 — Aug. 17, 2009
  • pp: 14618–14626

High-brightness single photon source from a quantum dot in a directional-emission nanocavity

Mitsuru Toishi, Dirk Englund, Andrei Faraon, and Jelena Vučković  »View Author Affiliations

Optics Express, Vol. 17, Issue 17, pp. 14618-14626 (2009)

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We analyze a single photon source consisting of an InAs quantum dot coupled to a directional-emission photonic crystal (PC) cavity implemented in GaAs. On resonance, the dot’s lifetime is reduced by more than 10 times, to 45ps. Compared to the standard three-hole defect cavity, the perturbed PC cavity design improves the collection efficiency into an objective lens (NA = 0.75) by factor 4.5, and improves the coupling efficiency of the collected light into a single mode fiber by factor 1.9. The emission frequency is determined by the cavity mode, which is antibunched to g(2) (0) = 0.05. The cavity design also enables efficient coupling to a higher-order cavity mode for local optical excitation of cavity-coupled quantum dots.

© 2009 OSA

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(130.3120) Integrated optics : Integrated optics devices
(140.3410) Lasers and laser optics : Laser resonators
(140.5960) Lasers and laser optics : Semiconductor lasers
(230.5750) Optical devices : Resonators
(230.6080) Optical devices : Sources
(250.5300) Optoelectronics : Photonic integrated circuits
(260.5740) Physical optics : Resonance

ToC Category:
Integrated Optics

Original Manuscript: March 31, 2009
Revised Manuscript: May 26, 2009
Manuscript Accepted: June 29, 2009
Published: August 4, 2009

Mitsuru Toishi, Dirk Englund, Andrei Faraon, and Jelena Vučković, "High-brightness single photon source from a quantum dot in a directional-emission nanocavity," Opt. Express 17, 14618-14626 (2009)

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