BackendEstimator¶

class BackendEstimator(backend, options=None, abelian_grouping=True, bound_pass_manager=None, skip_transpilation=False)[fuente]¶

Bases: BaseEstimator[PrimitiveJob[EstimatorResult]]

Evaluates expectation value using Pauli rotation gates.

The BackendEstimator class is a generic implementation of the BaseEstimator interface that is used to wrap a BackendV2 (or BackendV1) object in the BaseEstimator API. It facilitates using backends that do not provide a native BaseEstimator implementation in places that work with BaseEstimator, such as algorithms in qiskit.algorithms including VQE. However, if you’re using a provider that has a native implementation of BaseEstimator, it is a better choice to leverage that native implementation as it will likely include additional optimizations and be a more efficient implementation. The generic nature of this class precludes doing any provider- or backend-specific optimizations.

Initalize a new BackendEstimator instance

Parámetros

backend – Required: the backend to run the primitive on
options – Default options.
abelian_grouping – Whether the observable should be grouped into commuting
bound_pass_manager – An optional pass manager to run after parameter binding.
skip_transpilation – If this is set to True the internal compilation of the input circuits is skipped and the circuit objects will be directly executed when this object is called.

Methods

`run`	Run the job of the estimation of expectation value(s).
`set_options`	Set options values for the estimator.
`set_transpile_options`	Set the transpiler options for transpiler.

Attributes

backend¶: Returns: The backend which this estimator object based on

circuits¶

Quantum circuits that represents quantum states.

Devuelve: The quantum circuits.

observables¶

Observables to be estimated.

Devuelve: The observables.

options¶

Return options values for the estimator.

Devuelve: options

parameters¶

Parameters of the quantum circuits.

Devuelve: Parameters, where parameters[i][j] is the j-th parameter of the i-th circuit.

preprocessed_circuits¶: Transpiled quantum circuits produced by preprocessing :returns: List of the transpiled quantum circuit

transpile_options¶: Return the transpiler options for transpiling the circuits.

transpiled_circuits¶

Transpiled quantum circuits. :returns: List of the transpiled quantum circuit

Muestra: QiskitError – if the instance has been closed.