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Recently, a team of researchers from the University of Science and Technology of China (USTC), including prominent scientists Pan Jianwei, Bao Xiaohui, Zhang Qiang, and Peng Chengzhi, have achieved a significant milestone in the realm of large-scale optical interference research. By integrating cold atomic quantum memory with quantum relay technology, they have successfully constructed a non-local interferometer spanning a baseline of 20 kilometers. This breakthrough not only demonstrates the capability of quantum memory to compensate for geometric delays but also paves the way for innovative approaches in long-baseline optical interference imaging. The related research findings were featured as an Editor's Suggestion in Physical Review Letters on June 17, 2026.
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