qiskit.providers.ibmq.AccountProvider

class AccountProvider(credentials, access_token)

Provider for a single IBM Quantum Experience account.

The account provider class provides access to the IBM Quantum Experience services available to this account.

You can access a provider by enabling an account with the IBMQ.enable_account() method, which returns the default provider you have access to:

from qiskit import IBMQ
provider = IBMQ.enable_account(<INSERT_IBM_QUANTUM_EXPERIENCE_TOKEN>)

To select a different provider, use the IBMQ.get_provider() method and specify the hub, group, or project name of the desired provider.

Each provider may offer different services. The main service, IBMQBackendService, is available to all providers and gives access to IBM Quantum Experience devices and simulators.

You can obtain an instance of a service using the service() method or as an attribute of this AccountProvider instance. For example:

backend_service = provider.service('backend')
backend_service = provider.service.backend

Since IBMQBackendService is the main service, some of the backend-related methods are available through this class for convenience.

The backends() method returns all the backends available to this account:

backends = provider.backends()

The get_backend() method returns a backend that matches the filters passed as argument. An example of retrieving a backend that matches a specified name:

simulator_backend = provider.get_backend('ibmq_qasm_simulator')

It is also possible to use the backend attribute to reference a backend. As an example, to retrieve the same backend from the example above:

simulator_backend = provider.backend.ibmq_qasm_simulator

注釈

The backend attribute can be used to autocomplete the names of backends available to this provider. To autocomplete, press tab after provider.backend.. This feature may not be available if an error occurs during backend discovery. Also note that this feature is only available in interactive sessions, such as in Jupyter Notebook and the Python interpreter.

AccountProvider constructor.

パラメータ

• credentials (Credentials) – IBM Quantum Experience credentials.

• access_token (str) – IBM Quantum Experience access token.

__init__(credentials, access_token)

AccountProvider constructor.

パラメータ

• credentials (Credentials) – IBM Quantum Experience credentials.

• access_token (str) – IBM Quantum Experience access token.

Methods

__init__(credentials, access_token)	AccountProvider constructor.
backends([name, filters])	Return all backends accessible via this provider, subject to optional filtering.
get_backend([name])	Return a single backend matching the specified filtering.
service(name)	Return the specified service.
services()	Return all available services.

Attributes

backend	Return the backend service.
experiment	Return the experiment service.
random	Return the random number service.
version

property backend

Return the backend service.

戻り値の型

IBMQBackendService

戻り値

The backend service instance.

backends(name=None, filters=None, **kwargs)

Return all backends accessible via this provider, subject to optional filtering.

パラメータ

• name (Optional[str]) – Backend name to filter by.

• filters (Optional[Callable[[List[IBMQBackend]], bool]]) –

  More complex filters, such as lambda functions. For example:

  AccountProvider.backends(filters=lambda b: b.configuration().n_qubits > 5)
  

• kwargs (Any) –

  Simple filters that specify a True/False criteria in the backend configuration, backends status, or provider credentials. An example to get the operational backends with 5 qubits:

  AccountProvider.backends(n_qubits=5, operational=True)
  

戻り値の型

List[IBMQBackend]

戻り値

The list of available backends that match the filter.

property experiment

Return the experiment service.

戻り値の型

ExperimentService

戻り値

The experiment service instance.

例外

IBMQNotAuthorizedError – If the account is not authorized to use the experiment service.

get_backend(name=None, **kwargs)

Return a single backend matching the specified filtering.

パラメータ

• name (str) – name of the backend.

• **kwargs – dict used for filtering.

戻り値

a backend matching the filtering.

戻り値の型

Backend

例外

QiskitBackendNotFoundError – if no backend could be found or more than one backend matches the filtering criteria.

property random

Return the random number service.

戻り値の型

IBMQRandomService

戻り値

The random number service instance.

例外

IBMQNotAuthorizedError – If the account is not authorized to use the service.

service(name)

Return the specified service.

パラメータ

name (str) – Name of the service.

戻り値の型

Any

戻り値

The specified service.

例外

• IBMQInputValueError – If an unknown service name is specified.

• IBMQNotAuthorizedError – If the account is not authorized to use the service.

services()

Return all available services.

戻り値の型

Dict

戻り値

All services available to this provider.