QC Hype Watch: Quantum cryptography gets practical

[Dave Howe]

R. A. Hettinga wrote:
> Two factors have made this possible: the
> vast stretches of optical fiber (lit and dark) laid in metropolitan areas,
which very conveniently was laid from one of your customers to another 
of your customers (not between telcos?) - or are they talking only 
having to lay new links for the "last mile" and splicing in one of the 
existing dark fibres (presumably ones without any repeaters on it)