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The effect of counting rate and time resolution on the measured photon statistical properties—— Experimental study of direct measurement via SPCM

Li Yuan Li Gang Zhang Yu-Chi Wang Xiao-Yong Wang Jun-Min Zhang Tian-Cai

The effect of counting rate and time resolution on the measured photon statistical properties—— Experimental study of direct measurement via SPCM

Li Yuan, Li Gang, Zhang Yu-Chi, Wang Xiao-Yong, Wang Jun-Min, Zhang Tian-Cai
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  • Received Date:  07 March 2006
  • Accepted Date:  05 April 2006
  • Published Online:  20 November 2006

The effect of counting rate and time resolution on the measured photon statistical properties—— Experimental study of direct measurement via SPCM

  • 1. 量子光学与光量子器件国家重点实验室,山西大学光电研究所,太原 030006

Abstract: Photon statistical properties of coherent field and thermal field are experimentally studied by means of direct photon counting using only one single-photon-counting module (SPCM) operating in Geiger mode. The second-order degree of coherence as affected by photon counting rate and selected resolution time is investigated systematically. By taking into account all the experimental factors which can influence the g(2), the second-order degree of coherence of an unknown optical field can be determined quickly and simply via single SPCM when choosing proper detecting conditions. In our experiment, when the counting rate is about 109 kc/s and the resolution time varies from 28 ns to 212 ns, the measured results can reliably reflect the different second-order degree of coherence of coherent and thermal fields.

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