arXiv:quant-ph/0411130 · Physical Review A

Concurrence of quasipure quantum states

Florian Mintert, Andreas Buchleitner

Published Jul 27, 2005• 30 citations

Abstract

We derive an analytic approximation for the concurrence of weakly mixed bipartite quantum states---typical objects in state of the art experiments. This approximation is shown to be a lower bound of the concurrence of arbitrary states.

DOI: 10.1103/physreva.72.012336

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