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Synchronization and Coexistence in Quantum networks



Ivan Burenkov, Alexandra Semionova, FNU Hala, Thomas Gerrits, Anouar Rahmouni, DJ Anand, Ya-Shian Li-Baboud, Oliver T. Slattery, Abdella Battou, Sergey Polyakov


We investigate the coexistence of clock synchronization protocols with quantum signals in a common single-mode optical fiber. By measuring optical noise between 1500 nm to 1620 nm we demonstrate a potential for up to 100 quantum DWDM channels coexisting with the classical synchronization signals. Both ''White Rabbit'' and a pulsed laser-based synchronization were characterized and compared. We establish the theoretical limit of the fiber link length for coexisting quantum and classical channels. The maximal fiber length is below approximately 100 km for off-the-shelf optical transceivers and can be significantly improved by taking advantage of quantum receivers.
Optics Express


Quantum Networks, Clock Synchronization, Coexistence of quantum and classical signals


Burenkov, I. , Semionova, A. , Hala, F. , Gerrits, T. , Rahmouni, A. , Anand, D. , Li-Baboud, Y. , Slattery, O. , Battou, A. and Polyakov, S. (2023), Synchronization and Coexistence in Quantum networks, Optics Express, [online],, (Accessed April 23, 2024)
Created March 27, 2023, Updated May 26, 2023