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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 25 — Dec. 11, 2006
  • pp: 12388–12393

Generation of correlated photons in nanoscale silicon waveguides

Jay E. Sharping, Kim Fook Lee, Mark A. Foster, Amy C. Turner, Bradley S. Schmidt, Michal Lipson, Alexander L. Gaeta, and Prem Kumar  »View Author Affiliations

Optics Express, Vol. 14, Issue 25, pp. 12388-12393 (2006)

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We experimentally study the generation of correlated pairs of photons through four-wave mixing (FWM) in embedded silicon waveguides. The waveguides, which are designed to exhibit anomalous group-velocity dispersion at wavelengths near 1555 nm, allow phase matched FWM and thus efficient pair-wise generation of non-degenerate signal and idler photons. Photon counting measurements yield a coincidence-to-accidental ratio (CAR) of around 25 for a signal (idler) photon production rate of about 0.05 per pulse. We characterize the variation in CAR as a function of pump power and pump-to-sideband wavelength detuning. These measurements represent a first step towards the development of tools for quantum information processing which are based on CMOS-compatible, silicon-on-insulator technology.

© 2006 Optical Society of America

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(230.7380) Optical devices : Waveguides, channeled
(270.4180) Quantum optics : Multiphoton processes

ToC Category:
Optical Devices

Original Manuscript: September 15, 2006
Revised Manuscript: November 14, 2006
Manuscript Accepted: November 18, 2006
Published: December 11, 2006

Jay E. Sharping, Kim F. Lee, Mark A. Foster, Amy C. Turner, Bradley S. Schmidt, Michal Lipson, Alexander L. Gaeta, and Prem Kumar, "Generation of correlated photons in nanoscale silicon waveguides," Opt. Express 14, 12388-12393 (2006)

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