AI 中文总结
该研究提出基于经典光态光子数矩编码、孪生光束态关联保障安全的量子通信协议，经数值模拟验证其抗攻击可行性与密钥生成能力，为实验实现提供支撑。
AI 中文摘要
介观光态是量子通信的有前途资源，兼具抗损耗性与真实量子特性的保留。本文提出一种量子通信协议，信息编码于经典光态的光子数分布一阶和二阶矩，由光子数分辨探测器解码。安全性依赖于量子信道中与信号一同传输的孪生光束态的非经典光子数关联，该关联可通过实验获取的安全性见证抵御本文研究的截获-重发和分束攻击。在实验可及参数区域开展的数值模拟验证了该通信协议的可行性与安全性，在考虑的窃听攻击下产生非零密钥生成率，为其未来实验实现提供了动力。
英文摘要
Mesoscopic optical states are a promising resource for quantum communication, combining robustness against losses with the preservation of genuine quantum features. Here, we propose a quantum communication protocol in which information is encoded in the first and second moments of the photon-number distributions of classical optical states, and then decoded by photon-number-resolving detectors. Security relies on the nonclassical photon-number correlations of a twin-beam state transmitted alongside the signal in the quantum channel, providing an experimentally accessible security witness against both intercept-resend and beam-splitter attacks investigated in this work. Numerical simulations performed in experimentally accessible parameter regimes support the feasibility and security of the proposed communication protocol, yielding nonzero key generation rates under the considered eavesdropping attacks, and motivating its future experimental implementation.
Comments12 pages, 8 figures, comments are welcome
