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arXiv · 1810.07040

Experimental Reconstruction of Entanglement Quasiprobabilities

J. Sperling·E. Meyer-Scott·S. Barkhofen·B. Brecht·C. Silberhorn
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Abstract

We report on the first experimental reconstruction of an entanglement quasiprobability. In contrast to related techniques, the negativities in our distributions are a necessary and sufficient identifier of separability and entanglement and enable a full characterization of the quantum state. A reconstruction algorithm is developed, a polarization Bell state is prepared, and its entanglement is certified based on the reconstructed entanglement quasiprobabilities, with a high significance and without correcting for imperfections.

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J. Sperling, E. Meyer-Scott, S. Barkhofen, B. Brecht, C. Silberhorn. 2018-10-16. Experimental Reconstruction of Entanglement Quasiprobabilities. https://doi.org/10.1103/physrevlett.122.053602

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