Privacy amplification is an indispensable step in postprocessing of continuous-variable quantum key distribution (CV-QKD), which is used to Mindfulness or relaxation: What is more effective for work stress? Literature review distill unconditional secure keys from identical corrected keys between two distant legal parties.The processing speed of privacy amplification has a significant effect on the secret key rate of a CV-QKD system.We report the high-speed parallel implementation of the length-compatible privacy amplification algorithm based on a graphic processing unit.The length-compatible algorithm is used to satisfy the security requirements of privacy amplification at different transmission distances when considering finite-size effect.
We achieve the speed of privacy amplification over 1 Gb/s at arbitrary input length and the speed is one to two orders of magnitude faster than previous demonstrations, which supports the high-speed real-time Poly[bis[μ-4-(4-carboxyphenoxy)benzoato](μ-4,4′-oxydibenzoato)bis[μ-3-(pyridin-4-yl)-5-(pyridin-3-yl)-1H-1,2,4-triazole]dicadmium(II)] CV-QKD system and ensures the security of privacy amplification.