BackendSampler

class qiskit.primitives.BackendSampler(backend, options=None, bound_pass_manager=None, skip_transpilation=False)

Bases: BaseSampler[PrimitiveJob[SamplerResult]]

A BaseSampler implementation that provides an interface for leveraging the sampler interface from any backend.

This class provides a sampler interface from any backend and doesn't do any measurement mitigation, it just computes the probability distribution from the counts. It facilitates using backends that do not provide a native BaseSampler implementation in places that work with BaseSampler, such as algorithms in qiskit.algorithms including SamplingVQE. However, if you're using a provider that has a native implementation of BaseSampler, 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.

Initialize a new BackendSampler

প্যারামিটার:

• backend -- Required: the backend to run the sampler primitive on

• options -- Default options.

• 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 objected is called.

রেইজেস:

ValueError -- If backend is not provided

Attributes

backend

Returns: The backend which this sampler object based on

circuits

Quantum circuits to be sampled.

রিটার্নস:

The quantum circuits to be sampled.

options

Return options values for the estimator.

রিটার্নস:

options

parameters

Parameters of quantum circuits.

রিটার্নস:

List of the parameters in each quantum circuit.

preprocessed_circuits

Preprocessed quantum circuits produced by preprocessing :returns: List of the transpiled quantum circuit

রেইজেস:

QiskitError -- if the instance has been closed.

transpile_options

Return the transpiler options for transpiling the circuits.

transpiled_circuits

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

রেইজেস:

QiskitError -- if the instance has been closed.

Methods

run(circuits, parameter_values=None, **run_options)

Run the job of the sampling of bitstrings.

প্যারামিটার:

• circuits (QuantumCircuit | Sequence[QuantumCircuit]) -- One of more circuit objects.

• parameter_values (Sequence[float] | Sequence[Sequence[float]] | None) -- Parameters to be bound to the circuit.

• run_options -- Backend runtime options used for circuit execution.

রিটার্নস:

The job object of the result of the sampler. The i-th result corresponds to circuits[i] evaluated with parameters bound as parameter_values[i].

রেইজেস:

ValueError -- Invalid arguments are given.

রিটার্ন টাইপ:

T

set_options(**fields)

Set options values for the estimator.

প্যারামিটার:

**fields -- The fields to update the options

set_transpile_options(**fields)

Set the transpiler options for transpiler. :param **fields: The fields to update the options.

রিটার্নস:

self.

রেইজেস:

QiskitError -- if the instance has been closed.