-----BEGIN PGP SIGNED MESSAGE----- Hi! AFAIK is 24 km the longest connection ever realised so far. The group of N. Gisin at the Univsersity of Geneva tested a quantum channel below the Geneva lake with a length of 24 km. To be found at: A. Mueller, H. Zbinden and N. Gisin, Nature 378, 449(1995) A Bibliography of Quantum Cryptography can be found at http://www.iro.umontreal.ca/~crepeau/Biblio-QC.html I think there is something on Quantum Cryptography from Los Alamos National Laboratory on Crypto'96 in August. They managed 7.5 km so far ? Greetings Niels Provos =8) - - PHYSnet Rechnerverbund PGP V2.6 Public key via finger or key server Niels Provos Universitaet Hamburg WWW: http://www.physnet.uni-hamburg.de/provos/ Jungiusstrasse 9 E-Mail: provos@wserver.physnet.uni-hamburg.de Germany 20355 Hamburg Tel.: +49 40 4123-2504 Fax: -6571 -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAgUBMetz8sweILHCAJhBAQFRCgP/ZX4KomR7kOMrozj56iksT6Cej/Xmpoo7 WviBQFbE5SMwaDmm+z2qRMPdcmpGHVkB1ct7zElS25gDT38IglIQqn77F3/hHpdO 4a6+bE28Qy/rR4kSTUjCzWHYsI6Q9U8ZoHpLpZKT8i90Y9KwSvfK1yd+9eIj/q3S g8c9XgoyRaM= =IVfw -----END PGP SIGNATURE-----