Novel continuous-variable quantum secure direct communication and its security analysis
Geng Chai, Zhengwen Cao, Weiqi Liu, Minghui Zhang, Kexin Liang, Jinye Peng · Laser Physics Letters · 2019
Abstract Quantum secure direct communication (QSDC) allows secret messages to be directly communicated over a quantum channel; its further development could lead to many practical applications. In this paper, we propose a novel continuous-variable (CV)-based QSDC which could be compatible with fully developed optical telecommunication technologies to minimize the implementation costs. Through a security analysis we show that the proposed scheme can effectively resist an eavesdropper’s attacks on the light intensity. Furthermore, our work should inspire the improvement, development and application of CV-based QSDC.