Practical security of continuous-variable quantum key distribution under finite-dimensional effect of multi-dimensional reconciliation

Zhou Yingming¹, Jiang Xue-Qin³, Liu Weiqi², Wang Tao¹, Huang Peng^{1, †}, Zeng Guihua^{1, 3, ‡}

(color online) Secret key rate under collective attacks in finite-size scenario. The blue solid line is the accurate secret key rate based on the finite-size security. The red solid line is the secret key rate based on the same finite-size scenario without considering the FDE. The block length N is set as and the security parameter . The modulation variance V_A is 6, and the excess noise is set as . The electronic noise at Bobʼs side is .