Phys. Rev. A 48, 4598–4604 (1993)Realistic optical homodyne measurements and quasiprobability distributionsReceived 25 May 1993; published in the issue dated December 1993 The deteriorating effect of low-efficiency detectors in different schemes suitable for a direct measurement of the Q function and in optical homodyne tomography is studied in some detail. It turns out that this effect amounts to smoothing the respective quasiprobability distribution that would be measured with unit-efficiency detectors. Our main result is that those smoothed distributions can be identified with certain s-parametrized quasiprobability distributions. Thus the latter gain direct experimental significance as distributions measurable under realistic experimental conditions. © 1993 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.48.4598
DOI:
10.1103/PhysRevA.48.4598
PACS:
42.50.Wm, 03.65.Bz
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