Characterization of entanglement of more than two qubits with Bell inequalities and global entanglement
arXiv:quant-ph/0406006 · doi:10.1103/PhysRevA.71.012305
Abstract
It is shown that the entanglement-structure of 3- and 4-qubit states can be characterized by optimized operators of the Mermin-Klyshko type. It is possible to discriminate between pure 2-qubit entanglements and higher entanglements. A comparison with a global entanglement measure and the i-concurrence is made.
9 pages, 6 figures, 3 tables, revtex 4, revised version