On the Discretized Gaussian Modulation (DGM)- Based Continuous Variable-QKD

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6 Scopus citations


To overcome the low reconciliation efficiency problem of Gaussian modulation (GM)-based-continuous variable (CV)-quantum key distribution (QKD), in this paper, we propose to use discretized GM (DGM)-based-CV-QKD. The proposed CV-QKD scheme has complexity and reconciliation efficiency similar to that of discrete modulation (DM)-based-CV-QKD and at the same time solves for the problem of the nonexistence of strict security proofs for the DM-CV-QKD under the collective attacks. We demonstrate that the 32-points-based DGM CV-QKD can closely approach the theoretical SKR-limit in medium and high channel losses regimes. On the other hand, the 64-points-based DGM CV-QKD scheme closely approaches the SKR-limit for all channel losses.

Original languageEnglish (US)
Article number8717649
Pages (from-to)65342-65346
Number of pages5
JournalIEEE Access
StatePublished - 2019


  • Gaussian modulation
  • Quantum communication
  • continuous variable (CV)-QKD
  • discrete modulation
  • information reconciliation
  • quantum key distribution (QKD)
  • secret-key rate (SKR)

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)


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