Unknown Error with job submitted to an open_pulse backend

[jccalvojackson]

Environment

• Qiskit version: 1.1.0
• Python version: 3.11
• Operating system: macos

What is happening?

When running the script below, which just prepares a ground state and measures with a custom measurement pulse, the job fails with no clue as to what the error is 'Job <> has failed:\nUnknown error.'

How can we reproduce the issue?

Running the following

import os
import matplotlib.pyplot as plt
import numpy as np
from qiskit import QuantumCircuit, pulse
from qiskit.circuit import Gate
from qiskit.pulse.library import GaussianSquare
from qiskit_ibm_runtime import QiskitRuntimeService

# example executing in cloud simulator
service = QiskitRuntimeService(
    channel="ibm_quantum",
    token=os.getenv("IBM_TOKEN"),
)
backend = service.least_busy(open_pulse=True)

# Choose the qubit to target
qubit = 0


# Measurement pulse parameters
meas_frequency = 7.17e9  # Hz
meas_amp = 0.1  # Amplitude
meas_duration = 1400  # Duration of the measurement pulse in samples

measurement_gate_g = Gate("measurement_gate_g", 1, [])

ground_circuit = QuantumCircuit(1, 1)
ground_circuit.append(measurement_gate_g, [0])


# Create the measurement pulse
with pulse.build(backend, name="measurement_g") as measurement_schedule_g:
    pulse.set_frequency(meas_frequency, pulse.measure_channel(0))
    pulse.acquire(1440, 0, pulse.MemorySlot(0))
    pulse.play(
        GaussianSquare(
            duration=1440,
            sigma=32,
            width=1312,
            amp=0.14866999999999997,
            angle=2.004274795979154,
            name="mg",
        ),
        pulse.measure_channel(0),
        name="mg",
    )
    pulse.delay(1360, pulse.measure_channel(0))

ground_circuit.add_calibration("measurement_gate_g", [qubit], measurement_schedule_g)


job = backend.run(
    [ground_circuit],
    shots=500,
    meas_level=1,
    meas_return="single",
)

What should happen?

Either run successfully or provide an informative error message.

Any suggestions?

No response

[wshanks]

@jccalvojackson I tried running this and it ran without error for me. What was the backend and what was the job ID?