Is it possible to do the transpilation with a priori retired devices?

Question

Is it possible to do the transpilation with "any" device in qiskit? I would be interested in doing this with already retired devices.

Answer 1

Yes, you have two options.

Option 1 - If the backend is part of qiskit.providers.fake_provider you can just load it and transpile for it:

from qiskit.providers.fake_provider import FakeLima
from qiskit import transpile
from qiskit.circuit.library import EfficientSU2

backend = FakeLima()

circuit = EfficientSU2(backend.configuration().num_qubits)
transpile(circuit, FakeLima()).draw('mpl')

or

Option 2 - You can define a coupling map by hand. For example:

from qiskit.transpiler import CouplingMap
coupling_map = CouplingMap([(0,1), (0,2), (2,1), (3,2), (2,3), (4,1)])
coupling_map.draw()

And then transpile in for that custom-defined coupling map:

from qiskit import transpile
from qiskit.circuit.library import EfficientSU2

circuit = EfficientSU2(backend.configuration().num_qubits)
transpile(circuit, coupling_map=coupling_map).draw('mpl')