Title :
Practical single sideband modulation scheme for free-space quantum cryptography
Author :
Cussey, J. ; Merolla, J.-M.
Author_Institution :
FEMTO-ST, GTL-CNRS Telecom, Metz, France
Abstract :
Quantum key distribution (QKD) is a new technique using physics laws for securing key exchanges. Here we report a new phase-encoding technique adapted to free-space communications. The method combines a direct-modulation scheme with a WDM synchronisation allowing to achieve a reduced size and stabilized system.
Keywords :
optical communication; optical modulation; phase coding; quantum cryptography; synchronisation; wavelength division multiplexing; WDM synchronisation; direct-modulation scheme; free-space communications; free-space quantum cryptography; phase-encoding technique; physics laws; quantum key distribution; secured key exchanges; single sideband modulation scheme; Clocks; Cryptography; Diode lasers; Frequency; Optical attenuators; Optical filters; Optical receivers; Physics; Signal generators; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1568268
