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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
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Routing Algorithm Within the Multiple Non-Overlapping Paths' Approach for Quantum Key Distribution Networks.

Evgeniy O Kiktenko1, Andrey Tayduganov1, Aleksey K Fedorov1

  • 1Laboratory of Quantum Information Technologies, National University of Science and Technology "MISIS", Moscow 119049, Russia.

Entropy (Basel, Switzerland)
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Summary
This summary is machine-generated.

A new quantum key distribution (QKD) routing algorithm enhances network security by distributing keys through multiple paths, even if trusted nodes are compromised. This ensures secure key sharing across the entire network.

Keywords:
QKD networkquantum communicationquantum key distributionrouting scheme

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Area of Science:

  • Quantum Information Science
  • Network Security
  • Cryptography

Background:

  • Quantum Key Distribution (QKD) offers information-theoretic security but faces challenges in network scalability and node vulnerabilities.
  • Existing QKD networks often rely on trusted nodes, which can be single points of failure.
  • Securely distributing keys between remote nodes not directly linked by QKD is a significant challenge.

Purpose of the Study:

  • To develop and evaluate a novel key routing algorithm for Quantum Key Distribution (QKD) networks.
  • To enhance the security and resilience of QKD networks against compromised trusted nodes.
  • To ensure efficient and secure key distribution between directly connected and remote nodes.

Main Methods:

  • A novel key routing algorithm was developed, utilizing multiple non-overlapping paths for key distribution.
  • The algorithm focuses on balanced workload allocation across network links to meet key generation rate targets.
  • The algorithm was tested on simulated QKD network models with 6 and 10 nodes.

Main Results:

  • The algorithm successfully demonstrated the ability to distribute secure keys in an all-to-all manner across the network.
  • Information-theoretic security of keys between remote nodes was maintained, even with a compromised trusted node.
  • Balanced workload distribution was achieved, meeting target key generation rates for both direct and remote connections.

Conclusions:

  • The developed key routing algorithm significantly improves the security and performance of QKD networks.
  • The approach mitigates vulnerabilities associated with individual trusted nodes in QKD networks.
  • This novel algorithm offers a promising solution for building more robust and scalable QKD infrastructures.