Readout-Error Mitigation

Readout-Error Mitigation (REM) is an error mitigation technique in which inverted transition / confusion matrices are applied to the noisy measurement results. This technique may also go by other names such as “measurement error mitigation” or “readout confusion inversion”. For more discussion of the theory of REM, see the section What is the theory behind REM?.

Workflow of the REM technique in Mitiq, detailed in the What happens when I use REM? section.

Below you can find sections of the documentation that address the following questions:

• How do I use REM?
• When should I use REM?
• What additional options are available when using REM?
• What happens when I use REM?
• What is the theory behind REM?

Here is an example on how to use REM (and REM in combination with ZNE) in Mitiq: Composing techniques: REM + ZNE.