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Spectrally resolved Franson interference

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Franson interference can be used to test the nonlocal features of energy-time entanglement and has become a standard in quantum physics.However,most of the previous Franson interference experiments were demonstrated in the time domain,and the spectral properties of Franson interference have not been fully explored.Here,we theoretically and experimentally demonstrate spectrally resolved Franson interference using biphotons with different correlations,including positive correlation,negative correlation,and non-correlation.It is found that the joint spectral intensities of the biphotons can be modulated along both the signal and idler di-rections,which has potential applications in generating high-dimensional frequency entanglement and time-frequency grid states.This work may provide a new perspective for understanding the spectral-temporal properties of the Franson interferometer.

Franson interferencespectrally resolved measurementenergy-time entanglementspectral correlation of biphotons

Rui-Bo Jin、Zi-Qi Zeng、Dan Xu、Chen-Zhi Yuan、Bai-Hong Li、You Wang、Ryosuke Shimizu、Masahiro Takeoka、Mikio Fujiwara、Masahide Sasaki、Pei-Xiang Lu

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Hubei Key Laboratory of Optical Information and Pattern Recognition,Wuhan Institute of Technology,Wuhan 430205,China

School of Physics and Information Science,Shaanxi University of Science and Technology,Xi'an 710021,China

Southwest Institute of Technical Physics,Chengdu 610041,China

Graduate School of Informatics and Engineering,University of Electro-Communications,Tokyo 182-8585,Japan

Department of Electronics and Electrical Engineering,Keio University,Kanagawa 223-8522,Japan

National Institute of Information and Communications Technology,Tokyo 184-8795,Japan

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Hubei Province

9236510612074309120742992022CFA039

2024

10.1007/s11433-023-2326-7

中国科学:物理学 力学 天文学(英文版)
中国科学院

中国科学:物理学 力学 天文学(英文版)

CSTPCD
影响因子：0.91
ISSN：1674-7348
年,卷(期)：2024.67(5)