Successful new field tests of a continuous-variable quantum key distribution (CV-QKD) system over commercial fiber networks could pave the way to its use in metropolitan areas.
![](https://3c1703fe8d.site.internapcdn.net/newman/csz/news/tmb/2018/1-quantum.jpg)
Source:
https://phys.org/news/2019-05-metropolitan-quantum-networks-closer.html