Observation of multiplex photon by ICCD

Abstract

The image intensifier is a revolutionary device that allows direct observation of the particle nature of photons. This outstanding instrument can simultaneously detect the presence and position of photons, which has greatly improved the study of interference at the photon level. However, this instrument can not measure the energy or wavelength of the photon, so even if multiple photons are detected at the same location, it is still detected as one. We found that the histogram of the ratio of the total light intensity to the peak value of the individual fluorescence images obtained by the image intensifier splits into two peaks. We show that this peak splitting occurs with a high probability near the bright line of the interference fringes and can be explained by the continuous photon incidence.