Quantum Supremacy: How the Quantum Computer Revolution Will Change Everything

by Michio Kaku

One theory is that this journey of the exciton is made possible by path integrals, which we saw earlier were introduced by Richard Feynman. We recall that Feynman rewrote the laws of the quantum theory in terms of paths. When an electron moves from one point or another, it somehow sniffs out all possible paths between these two points. Then it calculates a probability for each route. Hence, the electron is somehow “aware” of all possible paths connecting these points. This means that the electron “chooses” the path with the most efficiency. There is also a second mystery here. The process of photosynthesis happens at room temperature, where random motions of atoms in the environment should destroy any coherence among the excitons. Normally, quantum computers have to be cooled down to near absolute zero in order to minimize these chaotic motions, yet plants function perfectly well at normal temperatures.