Fig. 5: The variation of infidelity parameter vs. the number of copies.
From: Towards the standardization of quantum state verification using optimal strategies
a Nonadaptive strategy and b adaptive strategy. Here, the data are plotted on a log–log scale. The confidence parameter δ is chosen to be 0.10. The parameter ϵ fast decays to a low value which is asymptotically close to the infidelity 0.0036 (Nonadaptive) and 0.012 (Adaptive) of the generated quantum state when increasing the number of copies. The fitting slopes for the linear scaling region are −0.88 ± 0.03 and −0.78 ± 0.07 for the nonadaptive and adaptive, respectively. The blue symbol is the experimental data with error bar (Exp.), which is obtained by 100 rounds of measurements for each coincidence.
