Direct measurement of the Wigner function by photon counting

Details Direct measurement of the Wigner function by photon counting Direct measurement of the Wigner function by photon counting

1999-03-08

arxiv.org/abs/quant-ph/9903027v1

Phys.Rev.A60:674-677,1999

Physics

Quantum Physics

4 pages, REVTeX

Scientific paper

10.1103/PhysRevA.60.674

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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