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arXiv · 1709.02498

Young's double-slit interference with two-color biphotons

De-Jian Zhang·Shuang Wu·Hong-Guo Li·Hai-Bo Wang·Jun Xiong·Kaige Wang
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Abstract

In classical optics, Young's double-slit experiment with colored coherent light gives rise to individual interference fringes for each light frequency, referring to single-photon interference. However, two-photon double-slit interference has been widely studied only for wavelength-degenerate biphoton, known as subwavelength quantum lithography. In this work, we report double-slit interference experiments with two-color biphoton. Different from the degenerate case, the experimental results depend on the measurement methods. From a two-axis coincidence measurement pattern we can extract complete interference information about two colors. The conceptual model provides an intuitional picture of the in-phase and out-of-phase photon correlations and a complete quantum understanding about the which-path information of two colored photons.

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De-Jian Zhang, Shuang Wu, Hong-Guo Li, Hai-Bo Wang, Jun Xiong, Kaige Wang. 2017-09-08. Young's double-slit interference with two-color biphotons. https://arxiv.org/abs/1709.02498

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