On 2019-09-29 07:25, jim bell wrote:
https://www.wired.com/story/why-googles-quantum-computing-victory-is-a-huge-...
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