Scholarlink

We present the strategic framework and technical foundations of the National Quantum-Safe Network (NQSN) Testbed—a resilient and fully interoperable quantum-safe network. Built on a star-topology architecture over production-grade fiber infrastructure, the testbed supports multi-protocol quantum key distribution (QKD), post-quantum cryptography (PQC) and accommodates diverse applications from multiple vendors. Interoperability is enabled by a centralized key and network management system, ensuring seamless integration across heterogeneous technologies. We showcase a range of reference applications, including secure data center interconnects, edge computing, hybrid QKD–post-quantum cryptography (PQC) encryption, and multi-layer integration within the OSI stack. These implementations underscore the feasibility and adaptability of deploying quantum-safe technologies in complex, multi-input, multi-output network environments.

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Development of National Quantum-Safe Network Testbed in Singapore

  • 会议论文

  • 发表日期：

    2026年

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  • Hao Qin,
  • Jing Yan Haw,
  • Tosanut Rimprongern,
  • Matthew Wee,
  • Nelly Ng,
  • Christian Kurtsiefer,
  • Michael Kasper,
  • Alexander Ling

摘要

We present the strategic framework and technical foundations of the National Quantum-Safe Network (NQSN) Testbed—a resilient and fully interoperable quantum-safe network. Built on a star-topology architecture over production-grade fiber infrastructure, the testbed supports multi-protocol quantum key distribution (QKD), post-quantum cryptography (PQC) and accommodates diverse applications from multiple vendors. Interoperability is enabled by a centralized key and network management system, ensuring seamless integration across heterogeneous technologies. We showcase a range of reference applications, including secure data center interconnects, edge computing, hybrid QKD–post-quantum cryptography (PQC) encryption, and multi-layer integration within the OSI stack. These implementations underscore the feasibility and adaptability of deploying quantum-safe technologies in complex, multi-input, multi-output network environments.