We propose a genuine multi-party correlation measure for a multi-party quantum system as the trace norm of the cumulant of the state. The legitimacy of our multi-party correlation measure is explicitly demonstrated by proving it satisfies the five basic conditions required for a correlation measure. As an application we construct an efficient algorithm for the calculation of our measures for all stabilizer states.
@article{arxiv.quant-ph/0608240,
title = {A multi-party correlation measure based on cumulant},
author = {D. L. Zhou and B. Zeng and Z. Xu and L. You},
journal= {arXiv preprint arXiv:quant-ph/0608240},
year = {2007}
}
Comments
9 pages, 1 figure, to be published in Phys. Rev. A