Can you give us a brief on the bottom line practicality, probable applications, common benefits and and a projected time line to all this?
Bottom line practicality is the transmission of information with particles/photons or quantum particle states instead of your normal on/off binary system. Think of it as broadband from information transmission. Instead of coding something with on/off I can just send you the whole kit and kiboodle.
But what can happen is when you try something like that, the subtle math that is quantum mechanics, creaps into the mix. So those errors have to be eliminated for quantum computing to be possible.
I'm only guessing at this, but if we use the exponential rule that has worked well in guessing growth in computer power, I am guessing 10 years for a prototype that proves the concept and 30 years for something that can do actual calculations.