Statistical Inference from Imperfect Photon Detection

Details Statistical Inference from Imperfect Photon Detection Statistical Inference from Imperfect Photon Detection

2009-06-19

arxiv.org/abs/0906.3668v1

New J. Phys. 11, 113052 (2009)

Physics

Quantum Physics

15 pages, 9 figures

Scientific paper

We consider the statistical properties of photon detection with imperfect detectors that exhibit dark counts and less than unit efficiency, in the context of tomographic reconstruction. In this context, the detectors are used to implement certain POVMs that would allow to reconstruct the quantum state or quantum process under consideration. Here we look at the intermediate step of inferring outcome probabilities from measured outcome frequencies, and show how this inference can be performed in a statistically sound way in the presence of detector imperfections. Merging outcome probabilities for different sets of POVMs into a consistent quantum state picture has been treated elsewhere [K.M.R. Audenaert and S. Scheel, New J. Phys. 11, 023028 (2009)]. Single-photon pulsed measurements as well as continuous wave measurements are covered.

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