BackendConfiguration¶
- class qiskit.providers.models.BackendConfiguration(backend_name, backend_version, n_qubits, basis_gates, gates, local, simulator, conditional, open_pulse, memory, max_shots, coupling_map, supported_instructions=None, dynamic_reprate_enabled=False, rep_delay_range=None, default_rep_delay=None, max_experiments=None, sample_name=None, n_registers=None, register_map=None, configurable=None, credits_required=None, online_date=None, display_name=None, description=None, tags=None, dt=None, dtm=None, processor_type=None, parametric_pulses=None, **kwargs)[source]¶
Bases:
QasmBackendConfigurationBackwards compat shim representing an abstract backend configuration.
Initialize a QasmBackendConfiguration Object
- Parameters:
backend_name (str) – The backend name
backend_version (str) – The backend version in the form X.Y.Z
n_qubits (int) – the number of qubits for the backend
basis_gates (list) – The list of strings for the basis gates of the backends
gates (list) – The list of GateConfig objects for the basis gates of the backend
local (bool) – True if the backend is local or False if remote
simulator (bool) – True if the backend is a simulator
conditional (bool) – True if the backend supports conditional operations
open_pulse (bool) – True if the backend supports OpenPulse
memory (bool) – True if the backend supports memory
max_shots (int) – The maximum number of shots allowed on the backend
coupling_map (list) – The coupling map for the device
supported_instructions (List[str]) – Instructions supported by the backend.
dynamic_reprate_enabled (bool) – whether delay between programs can be set dynamically (ie via
rep_delay). Defaults to False.rep_delay_range (List[float]) – 2d list defining supported range of repetition delays for backend in μs. First entry is lower end of the range, second entry is higher end of the range. Optional, but will be specified when
dynamic_reprate_enabled=True.default_rep_delay (float) – Value of
rep_delayif not specified by user anddynamic_reprate_enabled=True.max_experiments (int) – The maximum number of experiments per job
sample_name (str) – Sample name for the backend
n_registers (int) – Number of register slots available for feedback (if conditional is True)
register_map (list) – An array of dimension n_qubits X n_registers that specifies whether a qubit can store a measurement in a certain register slot.
configurable (bool) – True if the backend is configurable, if the backend is a simulator
credits_required (bool) – True if backend requires credits to run a job.
online_date (datetime.datetime) – The date that the device went online
display_name (str) – Alternate name field for the backend
description (str) – A description for the backend
tags (list) – A list of string tags to describe the backend
dt (float) – Qubit drive channel timestep in nanoseconds.
dtm (float) – Measurement drive channel timestep in nanoseconds.
processor_type (dict) –
Processor type for this backend. A dictionary of the form
{"family": <str>, "revision": <str>, segment: <str>}such as{"family": "Canary", "revision": "1.0", segment: "A"}.family: Processor family of this backend.
revision: Revision version of this processor.
segment: Segment this processor belongs to within a larger chip.
parametric_pulses (list) – A list of pulse shapes which are supported on the backend. For example:
['gaussian', 'constant']**kwargs – optional fields
Attributes
- num_qubits¶
Returns the number of qubits.
In future, n_qubits should be replaced in favor of num_qubits for consistent use throughout Qiskit. Until this is properly refactored, this property serves as intermediate solution.
Methods