Readout Error Estimation

The readout.py module allows you to estimate the measurement confusion matrix.

• Readout Error Estimation
  • More Details
  • Simple readout fidelity and confusion matrix estimation
  • Generalizing to larger groups of qubits
    • Extract the one qubit readout (ro) fidelities
    • Pick a single two qubit joint confusion matrix and compare marginal to one qubit confusion matrix
  • Plot the confusion matrix
  • Estimate confusion matrix for active reset error

Functions

get_flipped_program(program)	For symmetrization, generate a program where X gates are added before measurement.
estimate_confusion_matrix(qc, qubit, num_shots)	Estimate the readout confusion matrix for a given qubit.
estimate_joint_confusion_in_set(qc, qubits, …)	Measures the joint readout confusion matrix for all groups of size group_size among the qubits.
estimate_joint_reset_confusion(qc, qubits, …)	Measures a reset ‘confusion matrix’ for all groups of size joint_group_size among the qubits.
marginalize_confusion_matrix(…)	Marginalize a confusion matrix to get a confusion matrix on only the marginal_subset.