Local sampling of the Wigner function at telecom wavelength with loss-tolerant detection of photon statistics
arXiv:1603.06938 · doi:10.1103/PhysRevLett.116.133601
Abstract
We report the experimental point-by-point sampling of the Wigner function for nonclassical states created in an ultrafast pulsed type-II parametric down-conversion source. We use a loss-tolerant time-multiplexed detector based on a fiber-optical setup and a pair of photon-number-resolving avalanche photodiodes. By capitalizing on an expedient data-pattern tomography, we assess the properties of the light states with outstanding accuracy. The method allows us to reliably infer the squeezing of genuine two-mode states without any phase reference.
To be published in Phys. Rev. Lett
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