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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 3 — Feb. 10, 2014
  • pp: 2376–2385

Waveguide-coupled photonic crystal cavity for quantum dot spin readout

R. J. Coles, N. Prtljaga, B. Royall, I. J. Luxmoore, A. M. Fox, and M. S. Skolnick  »View Author Affiliations

Optics Express, Vol. 22, Issue 3, pp. 2376-2385 (2014)

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We present a waveguide-coupled photonic crystal H1 cavity structure in which the orthogonal dipole modes couple to spatially separated photonic crystal waveguides. Coupling of each cavity mode to its respective waveguide with equal efficiency is achieved by adjusting the position and orientation of the waveguides. The behavior of the optimized device is experimentally verified for where the cavity mode splitting is larger and smaller than the cavity mode linewidth. In both cases, coupled Q-factors up to 1600 and contrast ratios up to 10 are achieved. This design may allow for spin state readout of a self-assembled quantum dot positioned at the cavity center or function as an ultra-fast optical switch operating at the single photon level.

© 2014 Optical Society of America

OCIS Codes
(230.5590) Optical devices : Quantum-well, -wire and -dot devices
(230.5298) Optical devices : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: October 30, 2013
Revised Manuscript: December 12, 2013
Manuscript Accepted: December 12, 2013
Published: January 28, 2014

R. J. Coles, N. Prtljaga, B. Royall, I. J. Luxmoore, A. M. Fox, and M. S. Skolnick, "Waveguide-coupled photonic crystal cavity for quantum dot spin readout," Opt. Express 22, 2376-2385 (2014)

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