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arXiv · 2503.13826

Ten-channel Hong-Ou-Mandel interference between independent optical combs

Wenhan Yan·Yang Hu·Yifeng Du·Kai Wang·Yan-Qing Lu·Shining Zhu·Xiao-Song Ma
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Abstract

Dissipative Kerr soliton (DKS) frequency comb exhibits broad and narrow-linewidth frequency modes, which make it suitable for quantum communication. However, scalable quantum network based on multiple independent combs is still a challenge due to their fabrication-induced frequency mismatches. This limitation becomes critical in measurement-device-independent quantum key distribution, which requires high visibility of Hong-Ou-Mandel interference between multiple frequency channels. Here, we experimentally demonstrate two independent DKS combs with ten spectrally aligned lines without any frequency locking system. The visibility for individual comb-line pairs reaches up to $46.72 \pm 0.63\%$ via precision frequency translation, establishing a foundation for deploying DKS combs in multi-user quantum networks.

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Wenhan Yan, Yang Hu, Yifeng Du, Kai Wang, Yan-Qing Lu, Shining Zhu, Xiao-Song Ma. 2025-03-18. Ten-channel Hong-Ou-Mandel interference between independent optical combs. https://arxiv.org/abs/2503.13826

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