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arXiv · 2109.07668

Interference fringes in a nonlinear Michelson interferometer based on spontaneous parametric down-conversion

Chen Yang·Zhi-Yuan Zhou·Liu-Long Wang·Yan Li·Shi-Kai Liu·Zheng Ge·Xiao-Chun Zhang·Qing Tang·Guang-Can Guo·Bao-Sen Shi
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Abstract

Quantum nonlinear interferometers (QNIs) can measure the infrared physical quantities of a sample by detecting visible photons. A QNI with Michelson geometry based on the spontaneous parametric down-conversion in a second-order nonlinear crystal is studied systematically. A simplified theoretical model of the QNI is presented. The interference visibility, coherence length, equal-inclination interference, and equal-thickness interference for the QNI are demonstrated theoretically and experimentally. As an application example of the QNI, the refractive index and the angle between two surfaces of a BBO crystal are measured using equal-inclination interference and equal-thickness interference.

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Chen Yang, Zhi-Yuan Zhou, Liu-Long Wang, Yan Li, Shi-Kai Liu, Zheng Ge, Xiao-Chun Zhang, Qing Tang, Guang-Can Guo, Bao-Sen Shi. 2021-09-16. Interference fringes in a nonlinear Michelson interferometer based on spontaneous parametric down-conversion. https://doi.org/10.1364/oe.437624

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