As the main branch of microwave photonics,radio-over-fiber technology provides high bandwidth,low-loss,and long-distance propagation capability,facilitating wide applications ranging from telecommunication to wireless networks.With ultrashort pulses as the optical carrier,a large capacity is further endowed.However,the wide bandwidth of ultrashort pulses results in the severe vulnerability of high-frequency radio frequency(RF)signals to fiber dispersion.With a time-energy entangled biphoton source as the optical carrier combined with the single-photon detection technique,a quantum microwave photonics method in radio-over-fiber systems is proposed and demonstrated experimentally.The results show that it not only realizes unprecedented nonlocal RF signal modulation with strong resistance to the dispersion but also provides an alternative mechanism to distill the RF signal out from the dispersion effectively.Furthermore,the spurious-free dynamic ranges of the nonlocally modulated and distilled RF signals have been significantly improved.With the ultra-weak detection and the high-speed processing advantages endowed by the low-timing-jitter single-photon detection,the quantum micro-wave photonics method opens new possibilities in modern communication and networks.

YAQING JIN;YE YANG;HUIBO HONG;XIAO XIANG;RUNAI QUAN;TAO LIU;SHOUGANG ZHANG;NINGHUA ZHU;MING LI;RUIFANG DONG

Key Laboratory of Time and Frequency Primary Standards,National Time Service Center Chinese Academy of Sciences,Xi'an 710600,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China;State Key Laboratory on Integrated Optoelectronics,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China;The 29th Research Institute of China Electronics Technology Group Corporation,Chengdu 610029,China;School of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100190,China

光子学研究（英文）

[1]YAQING JIN;YE YANG;HUIBO HONG;XIAO XIANG;RUNAI QUAN;TAO LIU;SHOUGANG ZHANG;NINGHUA ZHU;MING LI;RUIFANG DONG-.Quantum microwave photonics in radio-over-fiber systems)[J].光子学研究（英文）,2022(07):1669-1678

biphoton

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