PulseBackendConfiguration

class PulseBackendConfiguration(backend_name, backend_version, n_qubits, basis_gates, gates, local, simulator, conditional, open_pulse, memory, max_shots, coupling_map, n_uchannels, u_channel_lo, meas_levels, qubit_lo_range, meas_lo_range, dt, dtm, rep_times, meas_kernels, discriminators, hamiltonian=None, channel_bandwidth=None, acquisition_latency=None, conditional_latency=None, meas_map=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, channels=None, **kwargs)

Static configuration state for an OpenPulse enabled backend. This contains information about the set up of the device which can be useful for building Pulse programs.

Initialize a backend configuration that contains all the extra configuration that is made available for OpenPulse backends.

Parameters

• backend_name (str) – backend name.
• backend_version (str) – backend version in the form X.Y.Z.
• n_qubits (int) – number of qubits.
• basis_gates (List[str]) – list of basis gates names on the backend.
• gates (GateConfig) – list of basis gates on the backend.
• local (bool) – backend is local or remote.
• simulator (bool) – backend is a simulator.
• conditional (bool) – backend supports conditional operations.
• open_pulse (bool) – backend supports open pulse.
• memory (bool) – backend supports memory.
• max_shots (int) – maximum number of shots supported.
• coupling_map (list) – The coupling map for the device
• n_uchannels (int) – Number of u-channels.
• u_channel_lo (List[List[UchannelLO]]) – U-channel relationship on device los.
• meas_levels (List[int]) – Supported measurement levels.
• qubit_lo_range (List[List[float]]) – Qubit lo ranges for each qubit with form (min, max) in GHz.
• meas_lo_range (List[List[float]]) – Measurement lo ranges for each qubit with form (min, max) in GHz.
• dt (float) – Qubit drive channel timestep in nanoseconds.
• dtm (float) – Measurement drive channel timestep in nanoseconds.
• rep_times (List[float]) – Supported repetition times for device in microseconds.
• meas_kernels (List[str]) – Supported measurement kernels.
• discriminators (List[str]) – Supported discriminators.
• hamiltonian (Optional[Dict[str, str]]) – An optional dictionary with fields characterizing the system hamiltonian.
• channel_bandwidth (list) – Bandwidth of all channels (qubit, measurement, and U)
• acquisition_latency (list) – Array of dimension n_qubits x n_registers. Latency (in units of dt) to write a measurement result from qubit n into register slot m.
• conditional_latency (list) – Array of dimension n_channels [d->u->m] x n_registers. Latency (in units of dt) to do a conditional operation on channel n from register slot m
• meas_map (list) – Grouping of measurement which are multiplexed
• 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) – 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
• channels (Optional[Dict[str, Any]]) – An optional dictionary containing information of each channel – their purpose, type, and qubits operated on.
• **kwargs – Optional fields.

Attributes

num_qubits

sample_rate

Methods

acquire

control

describe

u_channel_lo = [
    [UchannelLO(q=0, scale=1. + 0.j)],
    [UchannelLO(q=0, scale=-1. + 0.j), UchannelLO(q=1, scale=1. + 0.j)]
]

backend.configuration().describe(ControlChannel(1))
>>> {DriveChannel(0): -1, DriveChannel(1): 1}

drive

from_dict

get_channel_qubits

get_qubit_channels

measure

to_dict