500 years is a big leap but I appreciate the caution. We actually already do hav... | Hacker News

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		_4ziu on Oct 20, 2018 \| parent \| context \| favorite \| on: Quantum computers will break the encryption that p... 500 years is a big leap but I appreciate the caution. We actually already do have working quantum computers. If you mean personal quantum computers, commercially, I would give it about a century, give or take a decade.

alfiedotwtf on Oct 20, 2018 | [–]

No. I'm talking about quantum computers that are actually practical.

Running stable at 0.004K for only a few milliseconds in a lab is not practical.

AlexCoventry on Oct 20, 2018 | [–]

"Working" in this context clearly means "able to break deployed cryptosystems." We are a long way from that.

https://www.forbes.com/sites/fredcampbell/2018/03/14/how-cap...

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