Large-scale cluster quantum microcombs

• URL: http://arxiv.org/abs/2406.10715v2
• Date: Mon, 16 Dec 2024 16:05:23 GMT
• Title: Large-scale cluster quantum microcombs
• Authors: Ze Wang, Kangkang Li, Yue Wang, Xin Zhou, Yinke Cheng, Boxuan Jing, Fengxiao Sun, Jincheng Li, Zhilin Li, Bingyan Wu, Qihuang Gong, Qiongyi He, Bei-Bei Li, Qi-Fan Yang,
• Abstract summary: Cluster quantum microcombs are generated within an on-chip optical microresonator driven by multi-frequency lasers. We show the largest-scale cluster states with unprecedented raw squeezing levels from a photonic chip.
• Score: 13.91765269590981
• License:
• Abstract: An optical frequency comb comprises a cluster of equally spaced, phase-locked spectral lines. Replacing these classical components with correlated quantum light gives rise to cluster quantum frequency combs, providing abundant quantum resources for measurement-based quantum computation and multi-user quantum networks. We propose and generate cluster quantum microcombs within an on-chip optical microresonator driven by multi-frequency lasers. Through resonantly enhanced four-wave mixing processes, continuous-variable cluster states with 60 qumodes are deterministically created. The graph structures can be programmed into one- and two-dimensional lattices by adjusting the configurations of the pump lines, which are confirmed inseparable based on the measured covariance matrices. Our work demonstrates the largest-scale cluster states with unprecedented raw squeezing levels from a photonic chip, offering a compact and scalable platform for computational and communicational tasks with quantum advantages.

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