Quantum Error Corrected Fidelity Routing Design for Long-Distance Quantum Networks
Yuto Lim, Lishuai Yuan, Z.W. Zhong · 2024
The use of quantum teleportation in future quantum networks creates a completely new way for communication. As the quantum link length increased, the fidelity decreased, owing to the loss of quantum information between distant quantum nodes. This paper conducts an exploration of quantum fidelity routing design that is intended to specifically focus on the applicability of quantum error correction (QEC) as the scale of the network expands. Our research involves proposing a novel Quantum-maximum Fidelity miNimum Dijkstra's (Q-FIND) algorithm incorporated with QEC, which is designed to not only improve the long-distance link fidelity, but also to further reduce the network latency under the conditions of a noisy quantum channel. By using Qiskit, we examine the performance of proposed routing algorithm. Our simulation result reveals that the significance of QEC becomes more prominent in long-distance quantum networks.