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arXiv · 2511.10988

Memory-Assisted Nonlocal Interferometer Towards Long-Baseline Telescopes

Bin Wang·Xi-Yu Luo·Bo-Feng Gao·Jian-Long Liu·Chao-Yang Wang·Zi Yan·Qiao-Mu Ke·Da Teng·Ming-Yang Zheng·Yuan Cao·Jun Li·Cheng-Zhi Peng·Qiang Zhang·Xiao-Hui Bao·Jian-Wei Pan
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Abstract

Quantum networks and remote quantum entanglement serve as vital future quantum communication resources with broad applicability. A key direction lies in extending the baseline of optical interferometers to enhance angular resolution in interferometric imaging. Here, by measuring a simulated thermal light field, we report the demonstration of a memory-assisted nonlocal interferometer achieving a fiber-link baseline up to 20 km while simultaneously showing its capability to compensate for a geometric delay equivalent to 1.5 km. This result demonstrates potential for enhancing the angular resolution of interferometric imaging in the optical band with delocalized single-photon entanglement, and paves the way for future application of quantum memories in astronomical observation.

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Bin Wang, Xi-Yu Luo, Bo-Feng Gao, Jian-Long Liu, Chao-Yang Wang, Zi Yan, Qiao-Mu Ke, Da Teng, Ming-Yang Zheng, Yuan Cao, Jun Li, Cheng-Zhi Peng, Qiang Zhang, Xiao-Hui Bao, Jian-Wei Pan. 2025-11-14. Memory-Assisted Nonlocal Interferometer Towards Long-Baseline Telescopes. https://arxiv.org/abs/2511.10988

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