Try the top search term under "Implementations": http://lmgtfy.com/?q=quantum+cryptography http://lmgtfy.com/?q=quantum+cryptography The Swiss ran a long-dista

Try the top search term under "Implementations": http://lmgtfy.com/?q=quantum+cryptography http://lmgtfy.com/?q=quantum+cryptography The Swiss ran a long-distance quantum crypto network this year for over 12,000 hours: http://www.swissquantum.com/ http://www.swissquantum.com/ I think BT was running a quantum crypto connection over about 50 km over 10 years ago.