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Towards photostatistics from photon-number discriminating detectors. (English) Zbl 1069.81009
Summary: We study the properties of a photodetector that has a number-resolving capability. In the absence of dark counts, due to its finite quantum efficiency, photodetection with such a detector can only eliminate the possibility that the incident field corresponds to a number of photons less than the detected photon number. We show that such a non-photon number-discriminating detector, however, provides a useful tool in the reconstruction of the photon number distribution of the incident field even in the presence of dark counts.

81P68 Quantum computation
81V80 Quantum optics
81P15 Quantum measurement theory, state operations, state preparations
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