O
Otfried Gühne
Researcher at Folkwang University of the Arts
Publications - 252
Citations - 14063
Otfried Gühne is an academic researcher from Folkwang University of the Arts. The author has contributed to research in topics: Quantum entanglement & Multipartite entanglement. The author has an hindex of 54, co-authored 237 publications receiving 11708 citations. Previous affiliations of Otfried Gühne include Institute for Quantum Optics and Quantum Information & Leibniz University of Hanover.
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Journal ArticleDOI
Entanglement detection
Otfried Gühne,Géza Tóth +1 more
TL;DR: In this article, the basic elements of entanglement theory for two or more particles and verification procedures, such as Bell inequalities, entangle witnesses, and spin squeezing inequalities, are discussed.
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Scalable multiparticle entanglement of trapped ions
Hartmut Häffner,W. Hänsel,Christian F. Roos,J. Benhelm,D. Chek-Al-Kar,M. Chwalla,T. Körber,Umakant D. Rapol,M. Riebe,Piet O. Schmidt,Christoph Becher,Otfried Gühne,Wolfgang Dür,Wolfgang Dür,Rainer Blatt +14 more
TL;DR: The scalable and deterministic generation of four-, five-, six-, seven- and eight-particle entangled states of the W type with trapped ions are reported, which obtain the maximum possible information on these states by performing full characterization via state tomography, using individual control and detection of the ions.
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Experimental entanglement of six photons in graph states
Chao-Yang Lu,Xiao-Qi Zhou,Otfried Gühne,Weibo Gao,Jin Zhang,Zhen-Sheng Yuan,Alexander Goebel,Tao Yang,Jian-Wei Pan,Jian-Wei Pan +9 more
TL;DR: In this article, the authors demonstrate the experimental entanglement of six photons and engineering of multiqubit graph states, including the largest photonic Schrodinger cat and a six-photon cluster state.
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Experimental detection of multipartite entanglement using witness operators.
Mohamed Bourennane,Manfred Eibl,Christian Kurtsiefer,Sascha Gaertner,Harald Weinfurter,Otfried Gühne,Philipp Hyllus,D. Bruss,Maciej Lewenstein,Anna Sanpera +9 more
TL;DR: A canonical way of constructing and decomposing witness operators so that they can be directly implemented with present technology is introduced and applied to three- and four-qubit entangled states of polarized photons, giving experimental evidence that the considered states contain true multipartite entanglement.
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State-independent experimental test of quantum contextuality
Gerhard Kirchmair,F. Zähringer,Rene Gerritsma,Matthias Kleinmann,Otfried Gühne,Adán Cabello,Rainer Blatt,Christian F. Roos +7 more
TL;DR: Kirchmair et al. as discussed by the authors performed an experiment with trapped ions that demonstrates a state-independent conflict between non-contextuality and quantum mechanics and showed that the conflict resides in the structure of the theory and is independent of the properties of special states.