Scientific American

1
Scientific American Cover Story - January 2005
It's a six page article starting on page 78.  The
systems are all based on quantum entanglement.
There are four products on  (or soon to be on)
the market.ID Quantique sells "An optical
fiber-based system sends quantum encrypted keys
over tens of kilometers."www.IDquantique.comMag
IO Technologies  sell "An optical fiber system 
sends quantum encrypted keys up to 100 kilometers
also includes hardware and software for
integration into exiting networks,"www.mafiqtech.
comNEC is "Scheduled to release an
optical-fiber product at the earliest next year
after a 2004 demonstration that transferred keys
over a record 150 kilometers."http//www.nec.co.j
p/press/en/0409/2701.html QinetiQ "provides
systems on a contract basis that transfers keys
through the air at distances of up to 10
kilometers has supplied a system to BBN
Technologies in Cambridge, Mass."http//www.qinet
iq.com/home/search.html http//www.bbn.com/News_an
d_Events/Press_Releases/05_06_01.html