I quote the main title of the article:

"Scientists in China managed to exchange a crypto key at a distance of over 1,000 kilometers"

Wow!

How can they do that?

On Monday, 29 June 2020 г., 2:54, jim bell <jdb10987@yahoo.com> wrote:

Cointelegraph: Experts Split on Practical Implications of Quantum Cryptography.
https://cointelegraph.com/news/experts-split-on-practical-implications-of-quantum-cryptography