由紧凑型交钥匙克尔频率梳驱动的低噪声频率合成与太赫兹无线通信。

Low-noise frequency synthesis and terahertz wireless communication driven by compact turnkey Kerr combs.

作者信息

Jia Kunpeng, Cai Yuancheng, Yi Xinwei, Qin Chenye, Zhao Zexing, Wang Xiaohan, Liu Yunfeng, Zhang Xiaofan, Cheng Shanshan, Jiang Xiaoshun, Sheng Chong, Huang Yongming, Yu Jianjun, Liu Hui, Jin Biaobing, You Xiaohu, Zhu Shi-Ning, Liang Wei, Zhu Min, Xie Zhenda

机构信息

National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering, College of Engineering and Applied Sciences, School of Physics, Research Institute of Superconductor Electronics (RISE) & Key Laboratory of Optoelectronic Devices and Systems with Extreme Performances of MOE, Key Laboratory of Intelligent Optical Sensing and Manipulation, Ministry of Education, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China.

Purple Mountain Laboratories, Nanjing, China.

出版信息

Nat Commun. 2025 Jul 7;16(1):6253. doi: 10.1038/s41467-025-60630-7.

DOI:10.1038/s41467-025-60630-7

PMID:40623973

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12234886/

Abstract

High frequency microwave, spanning up to terahertz frequency, is pivotal for next-generation communication, sensing and radar. However, it faces fundamental noise limitations when frequency is pushed towards such boundary of conventional electronic technologies. Photonic microwave generation, particularly Kerr-comb-based microwave source, benefits from high frequency operation but still suffers from phase noise constraints. Here we overcome this drawback by developing a compact, electrically-driven Kerr comb system that achieves near quantum-limited phase noise for microwave synthesis up to 384 GHz. Leveraging high-Q fiber Fabry-Perot resonators and optimized noise modeling under limited pump power, we demonstrate ultra-low phase noise performances of -133 dBc/Hz (10.1 GHz) and -95 dBc/Hz (300 GHz) at 10 kHz offset, approaching quantum noise limits. This breakthrough enables 64QAM modulation in terahertz wireless communication and record 240 Gbps data rate without need for carrier phase estimation. Our device can serve as a key building block for the future information technology.

摘要

高达太赫兹频率的高频微波对于下一代通信、传感和雷达至关重要。然而，当频率推向传统电子技术的这种边界时，它面临着基本的噪声限制。光子微波产生，特别是基于克尔频率梳的微波源，受益于高频运行，但仍受相位噪声的限制。在这里，我们通过开发一种紧凑的、电驱动的克尔频率梳系统克服了这一缺点，该系统在高达384吉赫兹的微波合成中实现了接近量子极限的相位噪声。利用高Q值光纤法布里-珀罗谐振器并在有限泵浦功率下进行优化的噪声建模，我们展示了在10千赫偏移时-133分贝/赫兹（10.1吉赫兹）和-95分贝/赫兹（300吉赫兹）的超低相位噪声性能，接近量子噪声极限。这一突破使得太赫兹无线通信中的64QAM调制成为可能，并实现了240吉比特/秒的创纪录数据速率，而无需载波相位估计。我们的器件可以作为未来信息技术的关键组件。