Balancing four-state continuous-variable quantum key distribution with linear optics cloning machine

Wu Xiao-Dong¹, Liao Qin¹, Huang Duan^{1, 2, †}, Wu Xiang-Hua¹, Guo Ying^{1, 3, ‡}

(color online) Relation between the LOCM-tuned transmittance and two parameters λ and τ. It is clear that the transmittance can be regulated in [0,1] by choosing some appropriate parameters λ and τ.