Noise Reduction in the Measurement of Light Intensity by means of Correlated Twin Photons
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概要
- 論文の詳細を見る
We investigated statistical fluctuations in the numbers of photons contained in the correlated twin photon beams generated by an optical parametric process. The coincidence between the signal- and idler-photoelectron pulses from a pair of avalanche photo-diodes was measured. The measured fluctuation in the number of signal-photons coinciding with idler-photons was equal to the standard deviation of a binomial distribution and was smaller than that of a Poisson distribution. We determined that even when the quantum efficiency of the photon detectors was much lower than unity, the uncertainty in the number of photons obtained with the twin photon beams was smaller, by a factor of $1/\sqrt{2}$, than that with a classical light beam.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 2001-06-15
著者
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MUROO Kazuyuki
Department of Applied Physics, Faculty of Technology, Tokyo University of Agriculture and Technology
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Takubo Yoshitaka
Department Of Applied Physics Faculty Of Engineering Tokyo University Of Agriculture And Technology
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Kajimura Yoshihiro
Department Of Advanced Energy Engineering Science Interdisciplinary Graduate School Of Engineering S
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Takubo Yoshitaka
Department of Applied Physics, Faculty of Technology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
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Muroo Kazuyuki
Department of Applied Physics, Faculty of Technology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
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