Chip-to-chip photonic quantum teleportation over optical fibers of 12.3 km

Dongning Liu; Zhanping Jin; Jingyuan Liu; Xiaotong Zou; Xiaosong Ren; Hao Li; Lixing You; Xue Feng; Fang Liu; Kaiyu Cui; Yidong Huang; Wei Zhang

doi:10.1038/s41377-025-01920-z

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Chip-to-chip photonic quantum teleportation over optical fibers of 12.3 km

Original Articles

- Chip-to-chip photonic quantum teleportation over optical fibers of 12.3 km
- Chip-to-chip photonic quantum teleportation over optical fibers of 12.3 km
- LSA 2025年14卷第9期页码：2571-2582
- Affiliations：
  
  1.Frontier Science Center for Quantum Information, State Key Laboratory of Low-Dimensional Quantum Physics, Beijing National Research Center for Information Science and Technology (BNRist), Electronic Engineering Department, Tsinghua University, Beijing, China
  2.National Key Laboratory of Materials for Integrated Circuits, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
  3.Beijing Academy of Quantum Information Sciences, Beijing, China
- Author bio：
  
  Yidong Huang (yidonghuang@tsinghua.edu.cn)
  Wei Zhang (zwei@tsinghua.edu.cn)
- Funds：
- DOI：10.1038/s41377-025-01920-z
  中图分类号：
- 收稿日期：2024-12-17，
  
  修回日期：2025-05-29，
  
  录用日期：2025-06-12，
  
  网络出版日期：2025-07-09，
  
  纸质出版日期：2025-09-30
- Accepted：
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Chip-to-chip photonic quantum teleportation over optical fibers of 12.3 km[J]. LSA, 2025,14(9):2571-2582.

Liu, D. N. et al. Chip-to-chip photonic quantum teleportation over optical fibers of 12.3 km. Light: Science & Applications, 14, 2571-2582 (2025).
Chip-to-chip photonic quantum teleportation over optical fibers of 12.3 km[J]. LSA, 2025,14(9):2571-2582. DOI： 10.1038/s41377-025-01920-z.

Liu, D. N. et al. Chip-to-chip photonic quantum teleportation over optical fibers of 12.3 km. Light: Science & Applications, 14, 2571-2582 (2025). DOI： 10.1038/s41377-025-01920-z.

摘要

Abstract

Quantum teleportation is a crucial function in quantum networks. The implementation of photonic quantum teleportation could be highly simplified by quantum photonic circuits. To extend chip-to-chip teleportation distance

more effort is needed on both chip design and system implementation. In this work

we demonstrate a time-bin-based chip-to-chip photonic quantum teleportation over optical fibers under the scenario of a star-topology quantum network. Three quantum photonic circuits are designed and fabricated on a single chip

each serving specific functions: heralded single-photon generation at the user node

entangled photon pair generation and BSM at the relay node

and projective measurement of the teleported photons at the central node. The unbalanced Mach–Zehnder interferometers (UMZI) for time-bin encoding in these quantum photonic circuits are optimized to reduce insertion losses and suppress noise photons generated on the chip. Besides

an active feedback system is employed to suppress the impact of fiber length fluctuation between the circuits

achieving a stable quantum interference for the BSM in the relay node. As a result

a photonic quantum teleportation over optical fibers of 12.3 km is achieved based on these quantum photonic circuits

showing the potential of chip integration for the development of quantum networks.

关键词

Keywords

references

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