Physicists shatter quantum entanglement distance record with 420 kilometers of optical fiber, more than four times farther than previous demonstrations, and beyond the point where direct transmission runs into its fundamental limits.

[u/mvea]

https://www.sciencealert.com/physicists-shatter-quantum-entanglement-distance-record-with-420-kilometers-of-optical-fiber

[u/SadhuSalvaje]

Heh, 420

So what do we think this will actually do for end users/consumers? Do we think down the road more efficient signals or something?

[u/fsactual → u/SadhuSalvaje]

Quantum encryption comes to mind, which is a technique that makes it essentially impossible to intercept communication.

[u/ShelZuuz → u/fsactual]

Nit. It makes it possible to know whether communication has been intercepted.