Large-scale cluster quantum microcombs

Release Time:2026-06-17  Hits:

• Date:2026-06-17
• DOI Number:10.1038/s41377-025-01812-2
• Title of Paper:Large-scale cluster quantum microcombs
• Journal:Light Sci. Appl.
• Summary: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.
• First Author:Ze Wang,Kangkang Li,Yue Wang,Xin Zhou,Yinke Cheng,Boxuan Jing,Fengxiao Sun,Jincheng Li,Zhilin Li,Bingyan Wu,Qihuang Gong
• Correspondence Author:Qiongyi He,Bei-Bei Li,Qi-Fan Yang
• Volume:14
• Page Number:164
• Translation or Not:No
• Date of Publication:2025-04-16
• Links to Published Journals:https://www.nature.com/articles/s41377-025-01812-2

• 1.s41377-025-01812-2.pdf