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Generation of frequency-bin entangled two-photon state via cascaded second-order nonlinear processes
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Paper Abstract

In this work, we propose and demonstrate the frequency-bin entangled two-photon state via cascaded second harmonic generation and spontaneous parametric down conversion (SHG-SPDC) processes in a single piece of PPLN waveguide. Our scheme is based on all fiber-pigtailed components at 1.5 μm telecom band. Two frequency-bins at 1531.34 nm and 1548.91 nm with bandwidth of 1.04 nm are prepared to be entangled. The frequency entanglement property of our generated two-photon states is measured by spatial two-photon quantum beating. A two-photon beating curve with a visibility of 87.92±0.47% is obtained, showing a good property of frequency-bin entanglement.

Paper Details

Date Published: 19 November 2019
PDF: 6 pages
Proc. SPIE 11195, Quantum and Nonlinear Optics VI, 111950X (19 November 2019); doi: 10.1117/12.2537598
Show Author Affiliations
Zichang Zhang, Univ. of Electronic Science and Technology of China (China)
Chenzhi Yuan, Univ. of Electronic Science and Technology of China (China)
Ruiming Zhang, Univ. of Electronic Science and Technology of China (China)
Hao Yu, Univ. of Electronic Science and Technology of China (China)
Guangwei Deng, Univ. of Electronic Science and Technology of China (China)
Heng Zhou, Univ. of Electronic Science and Technology of China (China)
You Wang, Univ. of Electronic Science and Technology of China (China)
Southwest Institute of Technical Physics (China)
Haizhi Song, Univ. of Electronic Science and Technology of China (China)
Southwest Institute of Technical Physics (China)
Qiang Zhou, Univ. of Electronic Science and Technology of China (China)
Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 11195:
Quantum and Nonlinear Optics VI
Qihuang Gong; Guang-Can Guo; Byoung Seung Ham, Editor(s)

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