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arXiv · 2508.10135

Generation of a CW anti-bunched photon field from a thin-film PPLN waveguide by two-photon interference with a weak coherent state

Yue Li·Haochuan Li·Yuhang Lei·Xiaoting Li·Jianmin Wang·Xuan Tang·Mu Ku Chen·E. Y. B. Pun·Cheng Wang·Z. Y. Ou
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Abstract

An anti-bunched photon field is produced from a thin-film ppln waveguide by mixing the on-chip two-photon state with a weak but matched coherent state. This is achieved by taking out the two-photon part of the coherent state via a destructive two-photon interference with the on-chip two-photon state. We achieve a photon rate of 100 kHz with a g2-value of 0.35. This anti-bunched light field will have applications in high-resolution quantum imaging such as long baseline quantum telescopy for enhancing the signal-to-noise ratio.

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Yue Li, Haochuan Li, Yuhang Lei, Xiaoting Li, Jianmin Wang, Xuan Tang, Mu Ku Chen, E. Y. B. Pun, Cheng Wang, Z. Y. Ou. 2025-08-13. Generation of a CW anti-bunched photon field from a thin-film PPLN waveguide by two-photon interference with a weak coherent state. https://arxiv.org/abs/2508.10135

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