I've always assumed that, however here quantum computers are in labs you can read articles about, they're herer at the NSA. Is there any external evidence that the NSA is already using them?
However currently these computers are constrained by classical memory and read write operations are still classical.
I'm willing to bet it'll be a century more at this rate before quantum computing comes of age.
Since the 40s people have been hyping them without any sort of clear understanding.
Groan: it's going to be Cloud/Big Data/ML/Blockchain hype all over again except possibly worse. I don't mind the technology, but the tsunami of vapid content (and conversation) that comes with it wears me out.
Remember how much effort the British put into making it hard for the Axis to realise that Engima had been cracked. To the extent that they allowed ships to be sunk and sailors to die. If a 3 letter agency does have anything then they are probably hoping to keep that edge for as long as possible.
(This doesn't mean that I believe they do - merely that I don't think it would be immediately obvious if they did)
It could be that they have some super secret projects which are protected by much better security, but I doubt it. If they could be that competent for one project, why not use the same protocols everywhere?
For exactly the reason set out in the post you are replying to, I would think, at least for a while.
Though that approach to security does not always last. The USA almost gave away that it had broken the Japanese navy's most important cyphers through its interception of Admiral Yamamoto.
This is a typo, surely? Quantum computers were first proposed in the 80s.
But tech-hype has always existed, side by side with those claiming tech has maxed out... It's disappointing to see the media even try TBH.