Fig. 4
From: Experimental study of multiple-shot unitary channels discrimination using the IBM Q computers
Probability of successful discrimination between the identity operation and the RZ(\(\pi /N\)) gate, where N is number of copies of unknown unitary, plotted as a function of the width of the hybrid rectangular scheme. The dashed red line corresponds to the XOR-based measurement strategy, while the solid blue line represents the short measurement scheme. Figure (a) illustrates the performance of hybrid scheme with 120 copies in total, Figure (b) corresponds to hybrid scheme with 240 copies in total, and Figure (c) corresponds to hybrid scheme with 1200 copies in total. Each circuit was executed with 10,000 shots. Measurement outcomes that could not be unambiguously associated with either gate were randomly assigned to one of the two possible answers.
