zlacker

>>tedsan+(OP)
Wouldn't 500bn into quantum computing show better returns for civilization? Assuming it's about progress and ... not money.

>>oldstr+oa
We don't really know anything useful that can be done with quantum computers for civilization.

They can break some cryptography... other than that... what are they good for?

There's some highly speculative ideas about using them for chemistry/biology research, but no guaranteed return on investment at all.

As far as I know... that's it.

>>gpm+Ic
Who can break crypto with quantum computing? That is total speculation.

>>dwnw+tf
I put the word "some" in front of "crypto" for a reason.

There is some crypto that we know how to break with a sufficiently large quantum computer [0]. There is some we don't know how to do that to. I might be behind the state of the art here, but when I wasn't we specifically really only knew how to use it to break cryptography that Shor's algorithm breaks.

[0] https://quantum-journal.org/papers/q-2021-04-15-433/