FluxTunableTransmon and Transmon question

[liorella-qm]

in FluxTunableTransmon and Transmon:

1. why is mixer optional? We'd always want to upconvert the signals, no? Is it for a scenario where you don't want to do mixer calibration at all? Is it even possible to define an IQ element without mixer in the config schema?
2. intermediate frequency should not be an int type. Probably the best thing to do is to set it to a float, this leads to desired behavior when you copy-paste into pycharm:

import numpy as np


def foo(x: float):
    print(x)
    

foo(2)
foo(2.3)
foo(4.5 + 1j)  # warning
ar = np.array(3)
foo(ar)  # warning
ar2 = np.array([2, 3])
foo(ar2[0])
foo(ar2)  # warning

[qguyk]

regarding 1 - it's optional because you don't have to define all in the init of the object.
you can later add a mixer.
@SatyaBade12 maybe we should add a validation in get_elements function that there is a mixer

[yomach]

"Is it even possible to define an IQ element without mixer in the config schema?"

Yes