On the photon subtraction-based measurement-device-independent CV-QKD protocols

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


To potentially overcome the practical security loopholes of CV-QKD protocols, in this paper, we propose to use the optimized eight-state measurement-device-independent (MDI) protocol and demonstrate that it can significantly outperform corresponding Gaussian modulation-based MDI and virtual photon subtraction-based MDI CV-QKD protocols in terms of both secret-key rate and achievable transmission distance. Contrary to the common belief that virtual photon subtraction method can extend the distance of MDI CV-QKD protocols, we show that this is not true for fully optimized MDI CV-QKD protocols and realistic system parameters.

Original languageEnglish (US)
Article number8864965
Pages (from-to)147399-147405
Number of pages7
JournalIEEE Access
StatePublished - 2019


  • Gaussian modulation
  • Quantum communication
  • continuous variable (CV)-QKD
  • discrete modulation
  • measurement-device-independent (MDI) CV-QKD protocols
  • quantum key distribution (QKD)
  • secret-key rate (SKR)
  • virtual photon subtraction method

ASJC Scopus subject areas

  • General Computer Science
  • General Materials Science
  • General Engineering


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