By IQT News posted 30 May 2019

(Phys.org) Chinese scientists have demonstrated CV-QKD transmission over commercial deployed fiber link with a distance of 50 kilometres. This successful 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.
Professor Hong Guo, from a joint team of Peking University and Beijing University of Posts and Telecommunications (PKU-BUPT joint team), Beijing, said: “CV-QKD provides, in principle, unconditional secret keys to protect people’s data—such as banking information, emails and passwords.

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