Performance of a reconciliation method operating on a discreet quantum key distribution system
This work addresses the challenge of secure key transmission in QKD systems, offering a domain-specific solution that appears incremental as it applies an existing coding method to a known bottleneck.
The paper tackled the problem of reconciling discrepancies in discrete-variable quantum key distribution (QKD) protocols, particularly under eavesdropping, by applying Turbo codes, resulting in a significant improvement in Bit Error Rate, potentially reducing it by a factor of three even with strong eavesdropping capabilities.
Reconciliation is a mechanism allowing to weed out the discrepancies between two correlated variables. It has great role in every Quantum Key Distribution protocol where the key has to be transmitted through a noisy channel or as in our case of study in presence of an eavesdropping. In this paper, we show that for discrete-variable QKD protocols, this problem can be advantageously solved with Turbo codes. In particular, we demonstrate that our method leads to a significant improvement of Bit Error Rate, may divide it by three in presence of a eavesdropper even with great eavesdropping capability.