**rahmat ali** asked

** is wave function associatd with photon?**

**Answer: **

The wave-function extend forever into all of space, the wave function is
what REPRESENTS the probability of finding the particle in a set state
at a set position at a set time, its a mathematical construct to
describe how the universe works, a model if you will.
The wave function squared is the probability so that a real number not
imaginary, this has nothing to do with the space itself, exactly right
about the difference the wave-function is a mathematical construct
applied across space from which you can derive the probability of
finding a particle.
As for the wave travelling infinitely fast, in quantum mechanics
particles can move faster than light but it is highly improbable due to
uncertainty principle, however at long distances that would allow this
the probability goes incredibly low.

No I just believe the wave function to be a mathematical representation
in that it is imaginary, it doesn't make the space it presides in
imaginary or the underlying wave nature of its probability distribution
any less real.
As for it being unsatisfactory that I would argue is merely as you are
used to large things in everyday life and the idea that things behave in
such an exotic manner on the small scale goes against "common" sense.
There is no reason that large scale observations should hold on a small
scale.
I believe the mistake comes from thinking about the fundamental
particles as particles, when they are unobserved they are probability
distributions and only when observed (say by a photon) do they collapse
to a particle view whilst being observed.