Scientific Results

Optimal verification of entanglement in a photonic cluster state experiment

Year: 2011

Authors: Wunderlich H., Vallone G., Mataloni P., Plenio M. B.

Autors Affiliation: Institut für Theoretische Physik, Universität Ulm, Albert Einstein-Allee 11, 89068 Ulm, Germany;
Centro Studi e Ricerche ‘Enrico Fermi’, Via Panisperna 89/A,Compendio del Viminale, Roma 00184, Italy;
Dipartimento di Fisica della ‘Sapienza’ Università di Roma, Roma 00185, Italy;
Istituto Nazionale di Ottica (INO-CNR), L.go E. Fermi 6, I-50125 Florence, Italy

Abstract: We report on the quantification of entanglement by means of entanglement measures on a four- and a six-qubit cluster state realized by using photons entangled both in polarization and linear momentum. This paper also addresses the question of the scaling of entanglement bounds from incomplete tomographic information on the density matrix under realistic experimental conditions.

Journal/Review: NEW JOURNAL OF PHYSICS

Volume: 13      Pages from: 033033  to: 033033

More Information: We thank E Pomarico, R Ceccarelli and G Donati for their contribution to the measurements presented in [6, 7, 12, 30]. This work was supported by the EU Integrated Project Q-ESSENCE, the EU STREP project HIP and by an Alexander von Humboldt Professorship.
DOI: 10.1088/1367-2630/13/3/033033

Citations: 5
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