Figure 3

Experimental results for determination of the four-, six- and eight-qubit GHZ states.

(a), (b) and (c), Coincidence counts obtained in the the |H〉/|V〉 basis(|H′〉/|V′〉) basis, accumulated for 600 s, 900 s and 1800 s for four-(a), six- (b) and eight-qubit (c) state respectively.