使用量子启用前向错误校正来抑制通信错误
Ivan A Burenkov1,2, N Fajar R Annafianto2, M V Jabir2
1Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, USA.
概括
本研究引入了用于光通信的量子启用前向错误校正,显著改善了超低功率量子接收器的经典限制之外的错误抑制.
科学领域:
- 量子信息科学 量子信息科学
- 光学通信工程 光学通信工程
- 错误纠正编码 错误纠正编码
背景情况:
- 噪音是所有光通信测量的固有因素,需要识别和纠正错误,以实现可靠的数据传输.
- 经典的错误纠正技术在光学接收器中是标准的,但尚未应用于基于量子测量的接收器.
研究的目的:
- 展示如何利用量子测量信息来有效纠正光通信中的错误.
- 为了引入一个新的量子启用前向错误校正协议.
主要方法:
- 该研究开发并应用了一种量子启用前置错误校正协议.
- 该协议在方位相位转换 (QPSK) 调制信号上进行了测试.
主要成果:
- 与原始符号错误率相比,量子启用协议实现了超过80dB的错误抑制.
- 它在超出经典QPSK极限的符号错误率上提供了大约40dB的改进.
- 只有每位11个光子就能达到低于10^-9的符号误差率.
结论:
- 这种方法使得用于超低功率光通信的可靠量子接收器成为可能.
- 利用量子测量进行错误纠正可以提高光学链路的信息容量和可扩展性.
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