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Updated: Aug 22, 2025

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
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APR-QKDN: A Quantum Key Distribution Network Routing Scheme Based on Application Priority Ranking.

Liquan Chen1,2, Ziyan Zhang1, Mengnan Zhao1

  • 1School of Cyber Science and Engineering, Southeast University, Nanjing 210096, China.

Entropy (Basel, Switzerland)
|November 11, 2022
PubMed
Summary

A new quantum key distribution (QKD) network routing scheme, APR-QKDN, prioritizes requests based on application needs. This improves network efficiency and increases the success rate of key requests by at least 5% in high-concurrency scenarios.

Keywords:
QKD networkpriorityquantum key distributionrouting schemetrusted relay

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Area of Science:

  • Quantum communication security
  • Network routing protocols

Background:

  • Traditional network mechanisms are unsuitable for building quantum key distribution (QKD) networks.
  • Existing QKD routing schemes often fail to address practical quantum key requirements in specific scenarios.

Purpose of the Study:

  • To propose a novel quantum key distribution network routing scheme (APR-QKDN) optimized for high concurrency and diverse application demands.
  • To enhance resource utilization and service efficiency in QKD networks.

Main Methods:

  • Developed the Application Priority Ranking for Quantum Key Distribution Network (APR-QKDN) scheme.
  • Prioritized concurrent requests using application priority, total key requirements, and key update rate.
  • Implemented a queuing strategy that dynamically adapts to current network resource availability.

Main Results:

  • The APR-QKDN scheme demonstrated improved resource utilization and service efficiency.
  • Simulation experiments showed a success rate improvement of at least 5% for application key requests in high-concurrency scenarios compared to existing schemes.

Conclusions:

  • The APR-QKDN routing scheme effectively addresses the challenges of high concurrency and varied application requirements in QKD networks.
  • The proposed scheme offers a significant improvement in the success rate of quantum key requests, enhancing the practicality of QKD networks.