概括
一个新的无数字对模拟转换器 (DAC) 量子噪声随机加密密码 (QNRC) 使用级联相位移键 (PSK) 调制. 这种实际方案提高了安全性,并且在没有DAC的情况下实现了长距离的高传输速率.
科学领域:
- 量子信息科学 量子信息科学
- 光学通信是指光学通信.
- 密码学 密码学 密码学 密码学
背景情况:
- 传统的量子噪声随机加密 (QNRC) 系统依赖于高速,高分辨率的数字对模拟转换器 (DAC).
- 对于QNRC系统的实际实施和成本效益来说,对DAC的依赖是一个瓶.
研究的目的:
- 为QNRC系统提出并演示一个实际的无DAC调制方案.
- 通过消除在发射器上需要DAC来提高QNRC的安全性和效率.
主要方法:
- 一个新的无DAC调制方案,使用由设计的电压信号驱动的级联相调制器 (PMs).
- 实施128PSK-QNRC系统,其传输速率为10Gbaud/s,传输距离超过50公里.
- 对比比特误差率 (BER) 性能与使用任意波形发生器 (AWG) 的传统DAC系统进行比较分析.
主要成果:
- 拟议的128-PSK-QNRC系统在没有DAC的情况下成功运行,在50公里内达到10Gbaud/s的速度.
- 与传统方案相比,功率处罚分别为 -1.8 dB,0.9 dB和1 dB,分别为10,5和2.5 Gbps.
- 没有DAC的方案显示了可比或更高的BER性能,特别是在更高的传输速率下,DAC限制更明显.
结论:
- 拟议的级联PSK调制方案有效地消除了QNRC系统中的DAC要求.
- 这种方法提高了QNRC的安全性和实用性,提供了具有竞争力的性能.
- 无DAC的QNRC系统显示出安全和高速通信应用的巨大潜力.
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