使用量子前向纠错抑制通信错误

IF 4.2 Q2 QUANTUM SCIENCE & TECHNOLOGY AVS quantum science Pub Date : 2023-09-01 DOI:10.1116/5.0164396
Ivan A. Burenkov, N. Fajar R. Annafianto, M. V. Jabir, Abdella Battou, Sergey V. Polyakov
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引用次数: 1

摘要

由于噪声是固有的所有测量,光通信需要错误识别和纠正,以保护和恢复用户数据。然而,在经典接收器中常规使用的纠错,并没有应用于利用量子测量的接收器。在这里,我们展示了如何在量子测量中唯一可用的信息可以用于有效的纠错。我们的量子前向纠错协议在正交相移键控(QPSK)上运行,与原始符号错误率相比,实现了超过80 dB的错误抑制,并且在QPSK经典限制之外,符号错误率提高了约40 dB。由于符号错误率低于10−9,每比特只有11个光子,这种方法可以可靠地使用量子接收器进行超低功率光通信。限制光功率可以提高光链路的信息容量,实现量子信道和经典信道在同一光纤中共存的可扩展网络。
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Suppressing communication errors using quantum-enabled forward error correction
Because noise is inherent to all measurements, optical communication requires error identification and correction to protect and recover user data. Yet, error correction, routinely used in classical receivers, has not been applied to receivers that take advantage of quantum measurement. Here, we show how information uniquely available in a quantum measurement can be employed for efficient error correction. Our quantum-enabled forward error correction protocol operates on quadrature phase shift keying (QPSK) and achieves more than 80 dB error suppression compared to the raw symbol error rate and approximately 40 dB improvement of symbol error rates beyond the QPSK classical limit. With a symbol error rate below 10−9 for just 11 photons per bit, this approach enables reliable use of quantum receivers for ultra-low power optical communications. Limiting optical power improves the information capacity of optical links and enables scalable networks with coexisting quantum and classical channels in the same optical fiber.
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来源期刊
CiteScore
9.90
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0.00%
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