Permutationally invariant quantum tomography.

Tóth, G; Wieczorek, W; Gross, D; Krischek, R; Schwemmer, C; Weinfurter, H

Tóth, G; Wieczorek, W; Gross, D; Krischek, R; Schwemmer, C; Weinfurter, H.

Afiliación

Tóth G; Department of Theoretical Physics, The University of the Basque Country, P.O. Box 644, E-48080 Bilbao, Spain.

Phys Rev Lett ; 105(25): 250403, 2010 Dec 17.

Article en En | MEDLINE | ID: mdl-21231565

RESUMEN

We present a scalable method for the tomography of large multiqubit quantum registers. It acquires information about the permutationally invariant part of the density operator, which is a good approximation to the true state in many relevant cases. Our method gives the best measurement strategy to minimize the experimental effort as well as the uncertainties of the reconstructed density matrix. We apply our method to the experimental tomography of a photonic four-qubit symmetric Dicke state.

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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2010 Tipo del documento: Article País de afiliación: España Pais de publicación: Estados Unidos

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