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Local Sampling of the Wigner Function at Telecom Wavelength with Loss-Tolerant Detection of Photon Statistics

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Silberhorn,  Ch
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Sanchez-Soto,  L. L.
Quantumness, Tomography, Entanglement, and Codes, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Harder, G., Silberhorn, C., Rehacek, J., Hradil, Z., Motka, L., Stoklasa, B., et al. (2016). Local Sampling of the Wigner Function at Telecom Wavelength with Loss-Tolerant Detection of Photon Statistics. PHYSICAL REVIEW LETTERS, 116(13): 133601. doi:10.1103/PhysRevLett.116.133601.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-62F1-A
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.