Figure 2: Characterization of stabilizer measurements.
From: Detecting bit-flip errors in a logical qubit using stabilizer measurements
Single-shot histograms for top (a) and bottom (b) ancilla readout signals Vt and Vb at the end of the sequence implementing the parallelized stabilizer measurements, with data-qubit computational states as input. The chosen thresholds for discretization of Vt and Vb (dashed vertical lines) maximize the parity assignment fidelities. (c) Double-parity assignment probabilities for each computational state input. The dashed horizontal line at 0.91 marks the loss of average assignment fidelity exclusively from ancilla readout errors.
