SYSTEM AND METHOD FOR QUANTUM KEY DISTRIBUTION OVER WDM LINKS

A system and a method for quantum key distribution between a transmitter and a receiver over wavelength division multiplexing (WDM) link are disclosed. The method includes providing one or more quantum channels and one or more conventional channels over the WDM link; assigning a different wavelength...

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Bibliographic Details
Main Authors CHAN, KAM TAI, LUO, YUHUI
Format Patent
LanguageEnglish
French
German
Published 21.08.2013
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A system and a method for quantum key distribution between a transmitter and a receiver over wavelength division multiplexing (WDM) link are disclosed. The method includes providing one or more quantum channels and one or more conventional channels over the WDM link; assigning a different wavelength to each of the one or more quantum channels and each of the one or more conventional channels; transmitting single photon signals on each of the one or more quantum channels; and transmitting data on each of the one or more conventional channels. The data comprises either conventional data or trigger signals for synchronizing the transmission of the single photon signals on the quantum channels. All channels have wavelengths around 1550 nm. The WDM link can be a 3-channel WDM link comprising two quantum channels for transmitting single photon signals and one conventional channel for transmitting conventional data or triggering signals.
Bibliography:Application Number: EP20060775213