Even if some studies try to find connections by QPT and brain functionality at neural level (Khrennikov et al., 2018), the use of QPT in this field is simply as an explanation theory useful to model real phenomena in the right way, but none of them is really claiming that our brain is working by applying QPT axioms.
the large set of works introducing word and sentence embeddings (Mikolov et al., 2013;Pennington et al., 2014;Bojanowski et al., 2016;Le and Mikolov, 2014;Sutskever et al., 2014;Kiros et al., 2015;Cer et al., 2018) produce representations in the real domain while we need similar vectors but in the complex domain.