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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 16 — Jun. 1, 2007
  • pp: 3069–3074

Direct measurement of photon number statistics at telecom wavelengths using a charge integration photon detector

Mikio Fujiwara and Masahide Sasaki  »View Author Affiliations

Applied Optics, Vol. 46, Issue 16, pp. 3069-3074 (2007)

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In optical quantum information technology, a photon number resolving detector (PNRD) is the basic device for developing photonic quantum computers. The demands for the PNRD are high quantum efficiency and wide dynamic range. We have developed a charge integration photon detector (CIPD) with a quantum efficiency of 80% at telecom wavelengths. The repetition rate of the CIPD is as low as 40 H z at present, but it can be applied for measurement of short pulses. We report the capability of the CIPD for multiphoton counting over 10 photons, its responsivity to the short pulses, and its high linearity using a binary intensity modulated short pulse (2 ns) train and simultaneous irradiation of two kinds of pulses.

© 2007 Optical Society of America

OCIS Codes
(040.3060) Detectors : Infrared
(040.3780) Detectors : Low light level
(040.5160) Detectors : Photodetectors
(040.5350) Detectors : Photovoltaic

ToC Category:

Original Manuscript: December 15, 2006
Manuscript Accepted: January 31, 2007
Published: May 15, 2007

Mikio Fujiwara and Masahide Sasaki, "Direct measurement of photon number statistics at telecom wavelengths using a charge integration photon detector," Appl. Opt. 46, 3069-3074 (2007)

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