Experimental Reconstruction of Entanglement Quasiprobabilities

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 recon...

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Bibliographic Details
Published in:	Physical review letters Vol. 122; no. 5; p. 053602
Main Authors:	Sperling, J, Meyer-Scott, E, Barkhofen, S, Brecht, B, Silberhorn, C
Format:	Journal Article
Language:	English
Published:	United States American Physical Society 08-02-2019
Subjects:	Algorithms Entanglement Reconstruction
Online Access:	Get full text
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Summary:	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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.122.053602