Author:
Peranić Matej,Clark Marcus,Wang Rui,Bahrani Sima,Alia Obada,Wengerowsky Sören,Radman Anton,Lončarić Martin,Stipčević Mario,Rarity John,Nejabati Reza,Joshi Siddarth Koduru
Abstract
AbstractThe information-theoretic unconditional security offered by quantum key distribution has spurred the development of larger quantum communication networks. However, as these networks grow so does the strong need to reduce complexity and overheads. Polarization-based entanglement distribution networks are a promising approach due to their scalability and no need for trusted nodes. Nevertheless, they are only viable if the birefringence of all-optical distribution fibres in the network is compensated to preserve the polarization-based quantum state. The brute force approach would require a few hundred fibre polarization controllers for even a moderately sized network. Instead, we propose and investigate four different realizations of polarization compensation schemes that can be used in quantum networks. We compare them based on the type of reference signals, complexity, effort, level of disruption to network operations and performance on a four-user quantum network.
Funder
Hrvatska Zaklada za Znanost
Croatian Ministry of Science and Education
British Scholarship Trust
Agency for Mobility and EU Programmes, Croatia
United Kingdom Research and Innovation’s (UKRI) Engineering and Physical Science Research Council (EPSRC) Quantum Communications Hub
Publisher
Springer Science and Business Media LLC
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Control and Systems Engineering