[knzhou]

If your standards are low enough that you would say superconductivity appears in nature, then quantum computing certainly does.

[raverbashing]

> But of course on planet earth at least it is hard for nature to use things requiring too high or low temperatures

So, no, superconductivity probably does not exist in nature

[knzhou]

Most candidates for quantum computing also require extremely low temperatures — in fact, lower than the ones for superconductivity.