A soft metric disclosure method for reverse reconciliation in PAM/QAM CV-QKD achieves secret key rates close to the theoretical upper bound and outperforms hard-decision reconciliation.
On the Discretized Gaussian Modulation (DGM)- Based Continuous Variable-QKD,
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Soft-Decoding Reverse Reconciliation in Discrete-Modulation CV-QKD
A soft metric disclosure method for reverse reconciliation in PAM/QAM CV-QKD achieves secret key rates close to the theoretical upper bound and outperforms hard-decision reconciliation.