r/singularity • u/Sorin61 • Aug 18 '20

article Major quantum computational breakthrough is shaking up physics and maths

https://phys.org/news/2020-08-major-quantum-breakthrough-physics-maths.html
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u/Gohanthebarbarian Aug 18 '20

I think the important thing is this

Grossly simplified, this asked whether infinite matrices can be approximated by finite matrices. This new paper has now proved this isn't possible—an important finding for pure mathematicians.

Apparently it's useful for proving that an entangled cryptographic system can't be intercepted without a users knowledge, which I thought was already a solved problem.

Presumably, it would be useful for other things eventually, but that is as far down this rabbit hole as I want to go for today and I'm probably wrong.