Unidimensional continuous-variable quantum key distribution with discrete modulation

Publication date: Available online 16 October 2019Source: Physics Letters AAuthor(s): Wei Zhao, Ronghua Shi, Yanyan Feng, Duan HuangAbstractIn this paper, we proposed an unidimensional continuous-variable quantum key distribution (CV-QKD) protocol with discrete modulation, which waives the necessity in one of the quadrature modulations and further simplified the implementation of the CV-QKD protocol. On the basis of the Heisenberg uncertainty relation, we analyze the boundary between the unphysical and physical region. Besides, we utilize a novel proof approach to achieve a lower bound valid of transmission distance. This scheme shows an available method to further simplified the implementation of the QKD.

Source: Physics Letters A - October 19, 2019 Category: Physics Source Type: research