Hertz-rate metropolitan quantum teleportation

Si Shen; Chenzhi Yuan; Zichang Zhang; Hao Yu; Ruiming Zhang; Chuanrong Yang; Hao Li; Zhen Wang; You Wang; Guangwei Deng; Haizhi Song; Lixing You; Yunru Fan; Guangcan Guo; Qiang Zhou

doi:10.1038/s41377-023-01158-7

Hertz-rate metropolitan quantum teleportation

Light Sci Appl. 2023 May 10;12(1):115. doi: 10.1038/s41377-023-01158-7.

Authors

Si Shen¹, Chenzhi Yuan¹, Zichang Zhang¹, Hao Yu¹, Ruiming Zhang¹, Chuanrong Yang¹, Hao Li², Zhen Wang², You Wang^{1

3}, Guangwei Deng^{1

4}, Haizhi Song^{1

3}, Lixing You², Yunru Fan¹, Guangcan Guo^{1

4}, Qiang Zhou^{5

6}

Affiliations

¹ Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China.
² Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China.
³ Southwest Institute of Technical Physics, Chengdu, 610041, China.
⁴ CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China.
⁵ Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China. zhouqiang@uestc.edu.cn.
⁶ CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China. zhouqiang@uestc.edu.cn.

Abstract

Quantum teleportation can transfer an unknown quantum state between distant quantum nodes, which holds great promise in enabling large-scale quantum networks. To advance the full potential of quantum teleportation, quantum states must be faithfully transferred at a high rate over long distance. Despite recent impressive advances, a high-rate quantum teleportation system across metropolitan fiber networks is extremely desired. Here, we demonstrate a quantum teleportation system which transfers quantum states carried by independent photons at a rate of 7.1 ± 0.4 Hz over 64-km-long fiber channel. An average single-photon fidelity of ≥90.6 ± 2.6% is achieved, which exceeds the maximum fidelity of 2/3 in classical regime. Our result marks an important milestone towards quantum networks and opens the door to exploring quantum entanglement based informatic applications for the future quantum internet.

Abstract

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