Cuantum technology has been explored at least since the 80s... Genuine question: have you heard about any institution actually using it in practical applications? In what use cases do we really need e.g. quantum encryption or quantum number generators? Simple improvements like two-level authentication and reseeding or adding environmental noise to RNGs have become common practice, but the quantum thing is just as blurry as before. From my observations such situations happen for two reasons: there's no need for the product or people don't understand the advantages. Since I'm a former quantum physicist (my PhD thesis begins with the description of a quantum computer!

) and I ask the question, I'm suspecting the first, but possibly I missed some progress in this field...