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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 13 — Jun. 23, 2008
  • pp: 9966–9977

High-efficiency, ultra low-noise all-fiber photon-pair source

Shellee D. Dyer, Martin J. Stevens, Burm Baek, and Sae Woo Nam  »View Author Affiliations


Optics Express, Vol. 16, Issue 13, pp. 9966-9977 (2008)
http://dx.doi.org/10.1364/OE.16.009966


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Abstract

We demonstrate an all-fiber photon-pair source with the highest coincidence-to-accidental ratio (CAR) reported to date in the fiber-optic telecom C-band. We achieve this through careful optimization of pair-production efficiency as well as careful characterization and minimization of all sources of background photons, including Raman generation in the nonlinear fiber, Raman generation in the single-mode fiber, and leakage of pump photons. We cool the nonlinear fiber to 4 K to eliminate most of the Raman scattering, and we reduce other noise photon counts through careful system design. This yields a CAR of 1300 at a pair generation rate of 2 kHz. This CAR is a factor of 12 higher than previously reported results in the C-band. Measured data agree well with theoretical predictions.

© 2008 Optical Society of America

OCIS Codes
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(270.0270) Quantum optics : Quantum optics

ToC Category:
Quantum Optics

History
Original Manuscript: April 28, 2008
Revised Manuscript: June 6, 2008
Manuscript Accepted: June 16, 2008
Published: June 20, 2008

Citation
Shellee D. Dyer, Martin J. Stevens, Burm Baek, and Sae Woo Nam, "High-efficiency, ultra low-noise all-fiber photon-pair source," Opt. Express 16, 9966-9977 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-13-9966


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