The expectations arising from the latest achievements in the quantum
computing field are causing that researchers coming from classical artificial
intelligence to be fascinated by this new paradigm. In turn, quantum computing,
on the road towards usability, needs classical procedures. Hybridization is, in
these circumstances, an indispensable step but can also be seen as a promising
new avenue to get the most from both computational worlds. Nonetheless, hybrid
approaches have now and will have in the future many challenges to face, which,
if ignored, will threaten the viability or attractiveness of quantum computing
for real-world applications. To identify them and pose pertinent questions, a
proper characterization of the hybrid quantum computing field, and especially
hybrid solvers, is compulsory. With this motivation in mind, the main purpose
of this work is to propose a preliminary taxonomy for classifying hybrid
schemes, and bring to the fore some questions to stir up researchers minds
about the real challenges regarding the application of quantum computing.

量子计算与混合化方案在现实应用中面临的困难和挑战的分类及研究问题探讨。