Title: Measurement of multi-phonton response time by using a single-photon detector
Abstract: We investigate the response time function of the avalanche photodiode single-photon detector for weak laser pulses with different incident photons and present a method to distinguish the incident photon number based on the response time of different photons.The association between the response time of different photons and detection time of weak laser pulse is analyzed theoretically.The transient response time of the single-photon detector under different incident laser power values is investigated experimentally.The response time values of one photon,two photons and three photons at the wavelength of 1 550 nm are achieved to be 10.73±0.22 ns,8.75±0.62 ns,5.98±1.27 ns,respectively,which can be an accurate criterion for photon-number-resolving of week light field.The dependence of photon response time on the change of weak laser pulse detection time induced by photon number statistical fluctuation of the single-photon detector is also analyzed.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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