Granted, the processors are still going to need cryogenic temperatures that are 180 times colder than pure interstellar space, but just a few months ago, a patent for a new room temperature semiconductor was published (filed by the Navy), so there's hope on the horizon for new quantum processor architectures that are a lot less "physically demanding." Couple that (pun intended) with news...literally days ago...of using terahertz frequency light to accelerate supercurrents, and you just got yourself a really fast quantum computer...