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Construction of entanglement witnesses based on concurrence for multi-qubit states
Stockholm University, Faculty of Science, Department of Physics.
2008 (English)In: Quantum information & computation, ISSN 1533-7146, Vol. 8, no 09-aug, 791-796 p.Article in journal (Refereed) Published
Abstract [en]

We establish a relation between concurrence and entanglement witnesses. In particular, we construct entanglement witnesses for three-qubit W and GHZ states in terms of concurrence. We also generalize our construction for multi-qubit states. This result gives the finest entanglement witnesses for a given class of state without any optimization.

Place, publisher, year, edition, pages
2008. Vol. 8, no 09-aug, 791-796 p.
Keyword [en]
entanglement, entanglement witnesses, concurrence, multipartite states
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-58248ISI: 000258699300008OAI: diva2:420123
authorCount :1Available from: 2011-05-31 Created: 2011-05-30 Last updated: 2011-05-31Bibliographically approved

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Heydari, Hoshang
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