Fig. 4: The C value, secure key rate of the merged datasets and the simulated result with Nt = 1.46 × 1013 and m = 12.
From: Free-running long-distance reference-frame-independent quantum key distribution
a and b show the C value and secure key rate respectively. The C value and secure key rate varies corresponding to varying misalignment of reference frame leaks different amounts of secure key information22.
