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Reverse Reconciliation with Soft Information for Discrete-Modulation CV-QKD at Long Range

Marco Origlia, Erdem Eray Cil, Laurent Schmalen, Marco Secondini

Abstract

We recently introduced a reverse reconciliation scheme with soft information. In this paper, we assess its performance at ultra-low SNR, thus proving that such scheme is a versatile solution to the reverse reconciliation problem.

Reverse Reconciliation with Soft Information for Discrete-Modulation CV-QKD at Long Range

Abstract

We recently introduced a reverse reconciliation scheme with soft information. In this paper, we assess its performance at ultra-low SNR, thus proving that such scheme is a versatile solution to the reverse reconciliation problem.
Paper Structure (4 sections, 2 figures)

This paper contains 4 sections, 2 figures.

Table of Contents

  1. Introduction
  2. Summary of Reverse Reconciliation with Soft Information
  3. Performance at Low SNR
  4. Conclusion

Figures (2)

  • Figure 1: Block diagram of the scheme for reverse reconciliation with soft information (RRS). The highlighted elements mark the difference of RRS with respect to the reverse reconciliation with hard information only (RRH).
  • Figure 2: Bit error rate characteristics for different reconciliation schemes.