On 2019-09-29 07:25, jim bell wrote:
https://www.wired.com/story/why-googles-quantum-computing-victory-is-a-huge-deal-and-a-letdown/
Fifty four qbits is a a not quite seven qbyte computer.
Interesting applications become possible when you have two hundred and
fifty six qbytes.
But fifty four qbits is one hell of a lot bigger than past quantum
computers. It is definitely a big step in the direction of a two
hundred and fifty six qubyte computer. The interesting question is how
does this technology scale to reasonably sized quantum computers.
And the answer is, it does not.
To get a reasonable sized quantum computer you are going to need quantum
error correction, with gigabyes of imperfect qbits representing a much
smaller number of quantum error corrected qbits. It is difficult wrap
one's mind around the necessary design, which resists human intuition -
hard to think about the scaling factors that come into play
