---
title: ZneOptions (v0.26)
description: API reference for qiskit_ibm_runtime.options.ZneOptions in qiskit-ibm-runtime v0.26
source: https://quantum.cloud.ibm.com/docs/en/api/qiskit-ibm-runtime/0.26/options-zne-options
---

# ZneOptions

*class* `ZneOptions(*args, **kwargs)`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/options/zne_options.py#L35-L116)

Zero noise extrapolation mitigation options. This is only used by V2 Estimator.

**Parameters**

- **amplifier** –

  Which technique to use for amplifying noise. One of:

  - ”gate\_folding” (default) uses 2-qubit gate folding to amplify noise. If the noise factor requires amplifying only a subset of the gates, then these gates are chosen randomly.
  - ”gate\_folding\_front” uses 2-qubit gate folding to amplify noise. If the noise factor requires amplifying only a subset of the gates, then these gates are selected from the front of the topologically ordered DAG circuit.
  - ”gate\_folding\_back” uses 2-qubit gate folding to amplify noise. If the noise factor requires amplifying only a subset of the gates, then these gates are selected from the back of the topologically ordered DAG circuit.

- **noise\_factors** – Noise factors to use for noise amplification. Default: (1, 3, 5).

- **extrapolator** –

  Extrapolator(s) to try (in order) for extrapolating to zero noise. One or more of:

  - ”linear”
  - ”exponential”
  - ”double\_exponential”
  - ”polynomial\_degree\_(1 \<= k \<= 7)”

  Default: (“exponential”, “linear”).

## Attributes

### amplifier

Type: `UnsetType | Literal['gate_folding', 'gate_folding_front', 'gate_folding_back']`

Default value: `Unset`

### extrapolator

Type: `UnsetType | Literal['linear', 'exponential', 'double_exponential', 'polynomial_degree_1', 'polynomial_degree_2', 'polynomial_degree_3', 'polynomial_degree_4', 'polynomial_degree_5', 'polynomial_degree_6', 'polynomial_degree_7'] | Sequence[Literal['linear', 'exponential', 'double_exponential', 'polynomial_degree_1', 'polynomial_degree_2', 'polynomial_degree_3', 'polynomial_degree_4', 'polynomial_degree_5', 'polynomial_degree_6', 'polynomial_degree_7']]`

Default value: `Unset`

### noise\_factors

Type: `UnsetType | Sequence[float]`

Default value: `Unset`

## Methods