Fig. 4: Sample complexities for verifying the Bell state and GHZ states in three different scenarios. | npj Quantum Information

Fig. 4: Sample complexities for verifying the Bell state and GHZ states in three different scenarios.

From: Optimal verification of the Bell state and Greenberger–Horne–Zeilinger states in untrusted quantum networks

Fig. 4

In standard QSV, the Bell state and GHZ states can be verified with the same sample complexity42,57. In the SDI scenario, the isotropic protocol is chosen for verifying the Bell state and the optimized equator + Z protocol is chosen for verifying the GHZ states. In the DI scenario, the Mermin inequality is employed for verifying the three-qubit GHZ state46,50. Here the significance level is chosen to be δ = 0.01.

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