Application of Adaptive Polar Code based CV-QKD Scheme for LEO Satellite Systems
Qiang Wang, Thara Son, Meixiang Zhang, Sooyoung Kim · 2023
The information reconciliation protocol plays a crucial role in achieving a high secret key rate in continuous variable quantum key distribution (CV-QKD) systems. It is closely intertwined with a forward error correction scheme. In systems that operate under dynamic channel conditions, such as low earth orbit (LEO) satellite systems, the utilization of an adaptive reconciliation protocol becomes essential to ensure efficiency. This necessity calls for an efficient rate-adaptive forward error correction scheme, encompassing a single encoder and decoder. This paper provides a comprehensive review of adaptive information reconciliation schemes utilizing polar codes. It also explores their application to LEO satellite systems.