Fig. 2: Experimental tomographic characterization of single-qubit measurements in parallel.
From: Parallel tomography of quantum non-demolition measurements in multi-qubit devices
a Measurement quantifiers: fidelity F (green), QNDness Q (orange), and indestructiveness 1 − D (blue) for each qubit. The inset represents the average performance (F + Q + 1 − D)/3 of each qubit, as they are located on the ibm_perth quantum processor. b Average Choi matrices \({\bar{{{\Upsilon }}}}_{n}\) of all qubits for both measurement outcomes n = 0, 1. c, d Specific Choi matrices \({{{\Upsilon }}}_{n}^{6}\) and \({{{\Upsilon }}}_{n}^{0}\) corresponding to the qubits with best and worst readout performance, respectively. e Error in the quantifiers and the Choi operators introduced by the parallelization of the QND-MT. Error bars are the standard deviation estimated with 5 realizations of the experiment.
