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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 1 — Jan. 1, 2008
  • pp: 7–14

Comparison of photon counting and analog techniques for the measurement of photon pair generation in a PPLN waveguide

Stefania Castelletto, Ivo Pietro Degiovanni, Valentina Schettini, Tommaso Del Rosso, Giancarlo Margheri, Leonardo Papi, and Stefano Sottini  »View Author Affiliations


JOSA B, Vol. 25, Issue 1, pp. 7-14 (2008)
http://dx.doi.org/10.1364/JOSAB.25.000007


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Abstract

We present two independent measurements of the photon pairs production efficiency (PPPE) at 1572 nm , generated in a noncommercial periodically poled lithium-niobate waveguide fabricated in our laboratory. The first measurement, referred to as “direct” measurement, is performed at the photon-counting level (light power at the level of a few picowatts), exploiting a typical coincidence detection technique and a dedicated statistical model. In this case the measured PPPE is ( 4.1 ± 1.1 ) 10 11   pairs ( s W ) . The same parameter was estimated independently by a well-established “indirect” measurement, based on a difference frequency generation experiment (typical light power level of a few microwatts). This other measurement yields ( 5.0 ± 2.4 ) 10 11   pairs ( s W ) . Despite the large uncertainty of this second measurement, we observe that the two results are in good agreement even considering only the lower uncertainty value. To our knowledge, it is the first realization of a comparison between these two measurement techniques, working at so different light levels.

© 2008 Optical Society of America

OCIS Codes
(030.5260) Coherence and statistical optics : Photon counting
(130.2790) Integrated optics : Guided waves
(130.4310) Integrated optics : Nonlinear
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(270.5290) Quantum optics : Photon statistics

ToC Category:
Integrated Optics

History
Original Manuscript: June 14, 2007
Manuscript Accepted: October 11, 2007
Published: December 11, 2007

Citation
Stefania Castelletto, Ivo Pietro Degiovanni, Valentina Schettini, Tommaso Del Rosso, Giancarlo Margheri, Leonardo Papi, and Stefano Sottini, "Comparison of photon counting and analog techniques for the measurement of photon pair generation in a PPLN waveguide," J. Opt. Soc. Am. B 25, 7-14 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-1-7

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