QUANTUM CRYPTOGRAPHY OVER 23 KM IN INSTALLED UNDER-LAKE TELECOM FIBER

Authors
MULLER A ZBINDEN H GISIN N
Citation
A. Muller et al., QUANTUM CRYPTOGRAPHY OVER 23 KM IN INSTALLED UNDER-LAKE TELECOM FIBER, Europhysics letters, 33(5), 1996, pp. 335-339
Citations number
17
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
33
Issue
5
Year of publication
1996
Pages
335 - 339
Database
ISI
SICI code
0295-5075(1996)33:5<335:QCO2KI>2.0.ZU;2-Z
Abstract
A quantum cryptographic channel using a 23 km long installed standard telecom optical cable is reported. The key is encoded in the polarizat ion of very weak laser pulses of average photon number 0.12. The measu red error rate is lower than 3.4%. The ability of the system to establ ish a quantum key at standard telecom wavelength (1300 nm) using insta lled cables is thus assessed.