奇数序量子噪声类流密码方案基于联合索引调制星座成型
Optics express
|April 12, 2025
概括
这项研究引入了一种使用联合索引调制 (JIM) 和星座成型来实现安全光通信的新型量子噪声流加密. 该方案实现了高数据速率和强大的防御攻击的安全性,从而实现了可靠的密钥传输.
科学领域:
- 量子密码学是一种量子密码学.
- 光学通信系统 光学通信系统
- 信息理论是信息理论.
背景情况:
- 安全的通信对于光学网络至关重要.
- 现有计划在平衡安全性和数据速率方面面临挑战.
- 需要新的调制和加密技术来实现先进的光学访问.
研究的目的:
- 提出一个类似量子噪声的流密码方案.
- 为了提高光学系统的安全性和数据传输效率.
- 为了提高性能,利用联合指数调制 (JIM) 和星座塑造.
主要方法:
- 使用子载体指数调制和双模式指数技术.
- 使用优化的索引规则构建了一个奇数顺序的9次方格振幅调制 (9QAM) 信号.
- 采用4D超混沌系统用于多维干扰和噪音位引入.
- 实现了星座的形成,以升级9QAM到576QAM.
主要成果:
- 在25公里的IMDD系统上成功传输了2.94Gb/s的量子噪声流信号.
- 与随机分布相比,在前向错误校正 (FEC) = 3.8 × 10−3 时获得了0.7 dB的增益.
- 关键传输的比特误差率 (BER) 保持在0,在错位时突然增加到0.5.
- 经证明的稳定性与一致的掩盖信号功率和检测失败概率约为1.
- 10149的钥匙空间有效地抵御了野蛮武力攻击.
结论:
- 拟议的JIM-576QAM1方案为光学接入应用提供了高可靠性和安全性.
- 该系统在钥匙传输方面表现出高灵敏度和精度.
- 该方案有效应对残酷武力攻击,确保强大的安全性.
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