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Direct measurement of spatial Wigner function with area-integrated detection

Eran Mukamel·Konrad Banaszek·Ian A. Walmsley·Christophe Dorrer
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Abstract

We demonstrate experimentally a novel technique for characterizing transverse spatial coherence using the Wigner distribution function. The presented method is based on measuring interference between a pair of rotated and displaced replicas of the input beam with an area-integrating detector, and it can be superior in regimes when array detectors are not available. We analyze the quantum optical picture of the presented measurement for single-photon signals and discuss possible applications in quantum information processing.

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Eran Mukamel, Konrad Banaszek, Ian A. Walmsley, Christophe Dorrer. 2003-02-17. Direct measurement of spatial Wigner function with area-integrated detection. https://doi.org/10.1364/ol.28.001317

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