Synchronization and coexistence in quantum networks

Author:

Burenkov Ivan A.1ORCID,Semionov Alexandra1,Hala 1,Gerrits Thomas1,Rahmouni Anouar1,Anand DJ1,Li-Baboud Ya-Shian1ORCID,Slattery Oliver1,Battou Abdella1,Polyakov Sergey V.12

Affiliation:

1. National Institute of Standards and Technology

2. University of Maryland

Abstract

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, 100 GHz wide channels coexisting with the classical synchronization signals. Both “White Rabbit” and pulsed laser-based synchronization protocols were characterized and compared. We establish a 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.

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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