Continuous-variable quantum key distribution based on continuous random basis choice

• 来源期刊: 中国物理B（英文版）
• 关键词: continuous-variable quantum key distribution basis choice
• 年，卷（期）: 2018,（7）
• 页码范围: 240-246
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/7/070305

摘要

Gaussian-modulated coherent state quantum key distribution is gradually moving towards practical application. Gen-erally, the involved scheme is based on the binary random basis choice. To improve the performance and security, we present a scheme based on a continuous random basis choice. The results show that our scheme obviously improves the performance, such as the secure communication distance. Our scheme avoids comparing the measurement basis and dis-carding the key bits, and it can be easily implemented with current technology. Moreover, the imperfection of the basis choice can be well removed by the known phase compensation algorithm.