Thanks, interesting news. Here is full article:
https://www.nature.com/articles/s41928-020-00528-y
This indeed a milestone engineering breakthrough, though this is not the only limiter for 1000-cubits scale for electronic circuit based gates. But error growth will still happen on large scale systems, so there are many challenges to work one.
But once done, say good buy to all RSA and EC crypto — for everything based on various forms of the factorization problem. So for common people it is better to prepare in advance. What can we do? Develop software or use it and report feedback.
Aside from aformentioned codecrypt there is Open Quantum Safe project:
The core project is liboqs with post-quantum crypto and there are forks of popular projects like openssh and openssl:
Beware that quantum crypto is still immature and specific algorithms or implementations may be found vulnerable in future for either or both traditional and quantum cryptoattacks. So use hybrid cryptography (traditional + quantum). All forks above provide such ability.