qiskit.pulse.builder.build¶

build(backend=None, schedule=None, name=None, default_alignment='left', default_transpiler_settings=None, default_circuit_scheduler_settings=None)[source]¶

Create a context manager for launching the imperative pulse builder DSL.

To enter a building context and starting building a pulse program:

from qiskit import execute, pulse
from qiskit.test.mock import FakeOpenPulse2Q

backend = FakeOpenPulse2Q()

d0 = pulse.DriveChannel(0)

with pulse.build() as pulse_prog:
    pulse.play(pulse.Constant(100, 0.5), d0)

While the output program pulse_prog cannot be executed as we are using a mock backend. If a real backend is being used, executing the program is done with:

qiskit.execute(pulse_prog, backend)

Parameters

backend (Union[Backend, BaseBackend]) – A Qiskit backend. If not supplied certain builder functionality will be unavailable.
schedule (Optional[ScheduleBlock]) – A pulse ScheduleBlock in which your pulse program will be built.
name (Optional[str]) – Name of pulse program to be built.
default_alignment (Union[str, AlignmentKind, None]) – Default scheduling alignment for builder. One of left, right, sequential or an alignment context.
default_transpiler_settings (Optional[Dict[str, Any]]) – Default settings for the transpiler.
default_circuit_scheduler_settings (Optional[Dict[str, Any]]) – Default settings for the circuit to pulse scheduler.

Return type

AbstractContextManager[ScheduleBlock]

Returns

A new builder context which has the active builder initialized.