I performed an experiment on a real Ibmq backend, and the results were satisfactory. I now require the simulation of that experiment. The simulation is not sufficiently consistent with the old experiment due to the new noise model, so I need to find the noise model of the backend at that specific date to perform the simulation!
If the device you were simulating is still on line, you can get properties (which is where the noise model lives) from part calibrations.
For getting calibration from, say, first day of 2022:
from qiskit_ibm_provider import IBMProvider provider = IBMProvider() backend = provider.get_backend('ibmq_lima') from datetime import datetime dt = datetime.fromisoformat('2022-01-01') prop_2022 = backend.properties(datetime=dt) prop_2022.last_update_date
datetime.datetime(2021, 12, 31, 8, 48, 43, tzinfo=tzlocal())
In this case, the calibration at the first day of 2022 was done the last day of 2021.
To create an Aer noise model with these properties:
from qiskit_aer.noise import NoiseModel backend_noise_model_2022 = NoiseModel.from_backend_properties(prop_2022)