Abstract—Recent researches have shown the theoretical possibility of accomplishing hypercomputation in human brain by using eventual superluminal evanescent photons generated inside brain’s microtubules, using these as quantum waveguides or resonant cavities. Nevertheless, no convincing physical mechanisms has been proposed so far, able to explain the generation of such eventual superluminal photons inside microtubules and the possibility to eventually use them to manipulate quantum bits in brain. In this paper we propose a novel theoretical model according to which a confined field of faster than light photons field of suitable wavelength can arises from a spontaneous phase transition of the QED quantum vacuum occurring in the water contained inside the microtubules inner volume. It has been shown that, in the water trapped inside microtubules, there exist the conditions for the formation of a macroscopic coherent quantum state in which water molecules oscillate in phase with an e,m, field associated to a suitable electronic transition. We have also discussed some interesting consequences of these results on the possibility of hypercomputing in human brain.