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Experimental detection of multipartite entanglement using witness operators
Bourennane, Mohamed (Max-Planck-Institut für Quantenoptik (Garching, Alemanya))
Eibl, Manfred (Max-Planck-Institut für Quantenoptik (Garching, Alemanya))
Kurtsiefer, Christian (Ludwig-Maximilians-Universität München. Fakultät für Physik)
Gaertner, Sascha (Max-Planck-Institut für Quantenoptik (Garching, Alemanya))
Weinfurter, Harald (Max-Planck-Institut für Quantenoptik (Garching, Alemanya))
Gühne, Otfried (Universität Hannover. Institut für Theoretische Physik)
Hyllus, Philipp (Universität Hannover. Institut für Theoretische Physik)
Bruß, Dagmar (Universität Hannover. Institut für Theoretische Physik)
Lewenstein, Maciej (Universität Hannover. Institut für Theoretische Physik)
Sanpera Trigueros, Anna (Universität Hannover. Institut für Theoretische Physik)
American Physical Society

Date: 2004
Abstract: We present the experimental detection of genuine multipartite entanglement using entanglement witness operators. To this aim, we introduce a canonical way of constructing and decomposing witness operators so that they can be directly implemented with present technology. We apply this method to three- and four-qubit entangled states of polarized photons, giving experimental evidence that the considered states contain true multipartite entanglement.
Rights: Tots els drets reservats.
Language: Anglès
Document: Article ; Versió publicada
Published in: Physical review letters, Vol. 92, Issue 8 (February 2004) , p. 087902, ISSN 1079-7114

DOI: 10.1103/PhysRevLett.92.087902


4 p, 232.3 KB

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 Record created 2014-01-20, last modified 2022-09-12



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