Figure 2: Tomographic reconstruction of the three- and four-photon GHZ states used in the protocols. | Nature Communications

Figure 2: Tomographic reconstruction of the three- and four-photon GHZ states used in the protocols.

From: Experimental verification of multipartite entanglement in quantum networks

Figure 2

(a) Three-photon GHZ state (left column) and ideal case (right column). (b) Four-photon GHZ state (left column) and ideal case (right column). Top row corresponds to the real parts and bottom row corresponds to the imaginary parts. The density matrix elements are given by ρij=〈i|ρexp|j〉, where ρexp is the reconstructed experimental density matrix.

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