arXiv:quant-ph/0609024 · Physical Review A

Concurrence via entanglement witnesses

Florian Mintert

Published May 2, 2007• 32 citations

Abstract

We derive an experimentally observable lower bound on concurrence of mixed quantum states in terms of an entanglement witness, relating measurements on single states with those on two copies.

DOI: 10.1103/physreva.75.052302

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