L. Duraffourg et al., Compact transmission system using single-sideband modulation of light for quantum cryptography, OPTICS LETT, 26(18), 2001, pp. 1427-1429
We report a new transmission that can be used for quantum key distribution.
The system uses single-sideband-modulated light in an implementation of th
e BB84 quantum cryptography protocol. The system is formed by two integrate
d unbalanced Mach-Zehnder interferometers and is based on interference betw
een phase-modulated sidebands in the spectral domain. Experiments show that
high interference visibility can be obtained. (C) 2001 Optical Society of
America.