Any quantum particle can be used in the double slit experiment. It doesn't have to be photons. It's been done with electrons, neutrons, and even buckyballs (Car

Any quantum particle can be used in the double slit experiment. It doesn't have to be photons. It's been done with electrons, neutrons, and even buckyballs (Carbon-60). So whatever is going on, it can't be as simple as "a field is created that photons respond to", because it's not only photons that show the pattern.