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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.

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