This paper investigates the design of low-complexity error correction codes for the verification step in continuous variable quantum key distribution (CVQKD) systems. We design new coding schemes based on quasi-cyclic repeat-accumulate codes which demonstrate good performances for CVQKD reconciliation. Given quasi-cyclic repeat-accumulate codes' commercial maturity, low implementation complexity and existing high-speed ASIC implementations, this makes these codes viable candidates for commercial CVQKD systems.
['Sarah J. Johnson', 'Vikram Arkalgud Chandrasetty', 'Andrew M. Lance']
Repeat-accumulate codes for reconciliation in continuous variable quantum key distribution