论文标题
双场量子数字签名
Twin-field quantum digital signatures
论文作者
论文摘要
数字签名是信息安全性的关键技术，尤其是对于身份身份认证。与经典的对应关系相比，量子数字签名（QDSS）提供了更高的安全级别，即信息理论安全性。目前，其性能受到关键生成协议（例如BB84或测量设备独立的协议）的限制，这些协议在渠道容量方面从根本上受到限制。幸运的是，最近提出的双场量子键分布可以克服此限制。本文介绍了双场QDS协议，并详细介绍了相应的安全性分析。在其发行阶段，已经采用了一个特定的关键生成协议，即发送或不启用的双场协议，并且已经实现了完整的参数优化方法。数值模拟结果表明，与所有其他现有协议相比，新协议具有出色的安全性和实用性。因此，新协议为QDS的现实应用程序铺平了道路
Digital signature is a key technique in information security, especially for identity authentications. Compared with classical correspondence, quantum digital signatures (QDSs) provide a considerably higher level of security, i.e., information-theoretic security. At present, its performance is limited by key generation protocols (e.g., BB84 or measurement-device-independent protocols), which are fundamentally limited in terms of channel capacity. Fortunately, the recently proposed twin-field quantum key distribution can overcome this limit. This paper presents a twin-field QDS protocol and details a corresponding security analysis. In its distribution stage, a specific key generation protocol, the sending-or-not-sending twin-field protocol, has been adopted and full parameter optimization method has been implemented. Numerical simulation results show that the new protocol exhibits outstanding security and practicality compared with all other existing protocols. Therefore, the new protocol paves the way toward real-world applications of QDSs
