Estimating Concurrence via Entanglement Witnesses
arXiv:1001.5185 · doi:10.1103/PhysRevA.81.052308
Abstract
We show that each entanglement witness detecting given bipartite entangled state provides an estimation of its concurrence. We illustrate our result with several well known examples of entanglement witnesses and compare the corresponding estimation of concurrence with other estimations provided by the trace norm of partial transposition and realignment.
5 figures
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Cited by in corpus (4)
- Entanglement witnesses: construction, analysis and classification
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- Witness based nonlinear detection of quantum entanglement
- Negative entanglement measure for bipartite separable mixed states