Of course the practical application of all this has been known by magi throught the ages as Retroactive Enchantment, which can be used to change the now/future by altering the past. In it's simplest form, one changes one's own perception of self history in order to become a different person in the future.
Chaos Magick emerged in the 1980's in an attempt to produce a theoretical framework of magick based in part on quantum physics and probability functions. You may find the works of Peter J. Carroll rather illuminating...
for correct cross-pollination between Universes, it is important that modified quantum states be manifested on a physical scale - ie, you need to express your thoughts either verbally or in text, not just think them.
And you need to do so in a state of Gnosis (one-pointed consciousness) for the thought to break free of your Psychic Censor.