We introduce a quantity which is formed using classical notions of mutual information and which is computed using the results of projective measurements. This quantity constitutes a sufficient condition for entanglement and represents the amount of information that can be extracted from a bipartite system for spacelike separated observers. In addition to discussion, we provide simulations as well as experimental results for the singlet and maximally correlated mixed states.
D. J. Starling, C. J. Broadbent, and J. C. Howell,Extracting an Entanglement Signature from Only Classical Mutual Information, Phys. Rev. A 84(3), 032305.
American Physical Society
This article was originally published in Physical Review A, volume 84, issue 3, in 2011. https://doi.org/10.1103/PhysRevA.84.032305