Regarding two-slit experiment against photons makes me conclude, that both frequency and phase of electormagnetic wave and photon wavefunction coincide in space and time.
Am I right?
If I am right and these two objects are located equally, doesn't it mean, that for EM waves of low frequency we see wavefunction itself? Particularly, for example, for radiowaves the EM wave is observable and, therefore, the wavefunction is also observable.
If this reasoning is wrong, then why?
The following answer What equation describes the wavefunction of a single photon? states that there is no non-relativistic equation of photon.
Which is true.
The following answer Relation between the electromagnetic wave and quantum wavefunction derives that it means that photon has no wavefunction, which is either not true or is not proven.
Absense of equation doesn't mean absense of the solution. For example, there is no equation for prime numbers, but this doesn't mean there are no prime numbers.
The wave function, by definition, is complex valued probability amplitude describing the probability of finding the particle in a given space time location (in a coordinate basis).
I don't see this can't be possible for photons.
