Fig. 3
From: Capacity estimation and verification of quantum channels with arbitrarily correlated errors
Bound on the rate for the experimental data as a function of ε. This figure shows the bound on the one-shot quantum capacity rate for the data gained in the transmon qubit. We pick p = 1/2, and use q = 0.9 as preparation quality to account for the experimental imperfections (see Supplementary Note 7 for details). a The experiment was carried out three times with different storage times Δt, for each of which we plotted the bound resulting from the estimation protocol as a function of the decoding error probability ε. Since the number of qubit preparations and measurements was high (N = 1.04 × 106), the dependence on ε is rather small. b For a better visibility of the ε-dependence, we show the plot for the shortest storage time separately and more zoomed-in in the direction of the bound
