Direct measurement of the Wigner function by photon counting

K. Banaszek , C. Radzewicz , K. Wodkiewicz (Uniwersytet Warszawski) , J. S. Krasinski (Oklahoma State University)

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classification 🪐 quant-ph

keywords functionwignerdirectmeasurementphotonalgorithmsallowedcharacterizing

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We report a direct measurement of the Wigner function characterizing the quantum state of a light mode. The experimental scheme is based on the representation of the Wigner function as an expectation value of a displaced photon number parity operator. This allowed us to scan the phase space point-by-point, and obtain the complete Wigner function without using any numerical reconstruction algorithms.

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Direct measurement of the Wigner function by photon counting

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