BackendV2 module

class BackendV2

Implements the Backend class. The Backend class is the main execution engine.

BackendV2()

The constructor of the BackendV2 class.

Args:

None

Returns:

BackendV2

Raises:

None

BackendV2.version: int

The version number of the class. Currently set as 2.

BackendV2.dt: int

Returns the time resolution of input signals in seconds.

BackendV2.dtm: int

Returns the time resolution of output signals in seconds.

BackendV2.max_circuits: int

The maximum number of circuits that can be executed in the same run by the backend.

BackendV2.num_qubits: int

The maximum number of qubits supported by the backend.

BackendV2.name: str

The name of the backend.

BackendV2.description: str

A description of the backend.

BackendV2.online_date: str

The date the backend was brought online

BackendV2.backend_version: str

The version of the backend.

run(self, run_input, **kwargs)

Inserts the quantum circuit for execution in the backend’s queue. Refer to the JobV1 class for polling for the status of the job.

Args:

run_input (QuantumCircuit):

The QuantumCircuit object that needs to be executed.

kwargs (dict):

Python dictionary describing execution parameters such as shots.

shots - The number of times the circuit needs to be executed in repetition.The measurement counts are maintained only for the first 10,000 shots. If more execution cycles are required, a file name can be provided where the measurements are logged.

mode (str):

“sync” - The quantum circuit is executed synchronously.

default - “async” - The quantum circuit is executed asynchronously.

performance (str):

“highestefficiency” - Highest Efficiency

“balancedaccuracy” - Balanced Accuracy

“highestaccuracy” - Highest Accuracy

“automatic” - Automatic

quiet (bool):

True (default) - Does not print any message

False - Prints some messages, such as which instruction is executed, which may be of help in tracking large circuits

defaults (bool):

default - True - Uses standard internal settings.

False - Uses compact internal settings.

generate_amplitude (bool):

True - Generate amplitudes corresponding to the measurements and print them in the logging file for measurements.

(default) False - Amplitudes are not printed in the logging file.

file (str):

An optional file name for logging the measurements.

Returns:

JobV1

Raises:

None