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Fidelity-Guarantee Entanglement Routing in Quantum Networks by Li, Jian; Wang, Mingjun; Jia, Qidong; Xue, Kaiping; Yu, Nenghai; Sun, Qibin; Lu, Jun is a scholarly article available to read on EtoBox.

What is Fidelity-Guarantee Entanglement Routing in Quantum Networks about?

Entanglement routing establishes remote entanglement connection between two arbitrary nodes, which is one of the most important functions in quantum networks. The existing routing mechanisms mainly improve the robustness and throughput facing the failure of entanglement generations, which, however, rarely include the considerations on the most important metric to evaluate the quality of connection, entanglement fidelity. To solve this problem, we propose purification-enabled entanglement routing designs to provide fidelity guarantee for multiple Source-Destination (SD) pairs in quantum networks. In our proposal, we first consider the single S-D pair scenario and design an iterative routing algorithm, Q-PATH, to find the optimal purification decisions along the routing path with minimum entangled pair cost. Further, a low-complexity routing algorithm using an extended Dijkstra algorithm, Q-LEAP, is designed to reduce the computational complexity by using a simple but effective purification decision method. Then we consider the common scenario with multiple S-D pairs and design a greedy-based algorithm considering resource allocation and rerouting process for multiple routing request

Author

Li, Jian; Wang, Mingjun; Jia, Qidong; Xue, Kaiping; Yu, Nenghai; Sun, Qibin; Lu, Jun

Published

2021

Language

EN