Quantum Information and Computation

Construction of entanglement witnesses based on concurrence for multi-qubit states

Hoshang Heydari

Published Sep 1, 2008• 1 citation

Abstract

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.

DOI: 10.26421/qic8.8-9-8

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