Chip-Based Measurement-Device-Independent Quantum Key Distribution

Henry Semenenko, Philip Sibson, Andy Hart, Mark G Thompson, John Rarity, Christopher Erven

Research output: Contribution to journalArticle (Academic Journal)peer-review

81 Citations (Scopus)
198 Downloads (Pure)


Modern communication strives towards provably secure systems which can bewidely deployed. Quantum key distribution provides a methodology to verify the integrityand security of a key exchange based on physical laws. However, physical systems oftenfall short of theoretical models meaning they can be compromised through uncharacterisedside-channels. The complexity of detection means that the measurement system is a vulnerabletarget for an adversary. Here we present secure key exchange up to200km while removingall side-channels from the measurement system. We use mass-manufacturable, monolithicallyintegrated transmitters that represent an accessible, quantum-ready communication platform.This work demonstrates a network topology that allows secure equipment sharing which isaccessible with a cost-effective transmitter, significantly reducing the barrier for widespreaduptake of quantum-secured communication.
Original languageEnglish
Pages (from-to)238-242
Number of pages5
Issue number3
Early online date19 Mar 2020
Publication statusE-pub ahead of print - 19 Mar 2020

Structured keywords

  • Bristol Quantum Information Institute
  • QETLabs
  • Photonics and Quantum


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