Chapter 11: Mitigating Quantum Errors Using Ignis

Ignis, as described in the Qiskit library, is a framework that contains various functionalities, such as characterization, verification, and mitigation. What this means is that it provides the ability to characterize the effects of noise on the system, verify the performance capabilities of the various gates and circuits, and calibrate circuits to generate routines that lessen the errors in your results.

This chapter will cover these topics by taking you through the process of characterizing and estimating the decoherence of the qubits from noise models. This will help you visualize and mitigate errors after measuring your results. We'll also work on mitigating quantum errors from the results we get back from the quantum devices using some of the features from the Ignis library.

In quantum systems, this noise originates from various sources: thermal heat from electronics, decoherence, dephasing, connectivity, or signal loss...