With energy–time entangled biphoton sources as the optical carrier and time-correlated single-photon detection for high-speed radio frequency (RF) signal recovery, the method of quantum microwave photonics (QMWP) has presented the unprecedented potential of nonlocal RF signal encoding and efficient RF signal distilling from the dispersion interference associated with ultrashort pulse carriers. In this paper, its capability in microwave signal processing and prospective superiority are further demonstrated. Both QMWP RF phase shifting and transversal filtering functionality, which are the fundamental building blocks of microwave signal processing, are realized. Besides good immunity to the dispersion-induced frequency fading effect associated with the broadband carrier in classical MWP, a native two-dimensional parallel microwave signal processor is provided. These results well demonstrate the superiority of QMWP over classical MWP and open the door to new application fields of MWP involving encrypted processing.

中文翻译：

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量子微波光子学突破微波光子频率衰减效应的经典极限

以能量-时间纠缠双光子源作为光载体和用于高速射频（RF）信号恢复的时间相关单光子检测，量子微波光子学（QMWP）方法展现了非局域射频信号编码的前所未有的潜力从与超短脉冲载波相关的色散干扰中提取有效的射频信号。本文进一步论证了其在微波信号处理方面的能力和潜在的优势。实现了 QMWP RF 相移和横向滤波功能，它们是微波信号处理的基本组成部分。除了对与经典 MWP 中的宽带载波相关的色散引起的频率衰落效应具有良好的免疫力外，提供了一种原生二维并行微波信号处理器。这些结果很好地证明了 QMWP 相对于经典 MWP 的优越性，并为 MWP 涉及加密处理的新应用领域打开了大门。