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Related Experiment Video

Updated: Jul 30, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Hertz-rate metropolitan quantum teleportation.

Si Shen1, Chenzhi Yuan1, Zichang Zhang1

  • 1Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China.

Light, Science & Applications
|May 10, 2023
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Summary

High-rate quantum teleportation achieved over 64 km fiber, demonstrating a significant step for quantum networks. This breakthrough enables faithful transfer of quantum states, paving the way for quantum internet applications.

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Area of Science:

  • Quantum Information Science
  • Quantum Communication Networks

Background:

  • Quantum teleportation is crucial for quantum networks, requiring high fidelity and rate over long distances.
  • Existing systems face limitations in speed and distance for metropolitan-scale quantum communication.

Purpose of the Study:

  • To demonstrate a high-rate quantum teleportation system over a metropolitan fiber network.
  • To achieve faithful transfer of quantum states at unprecedented speeds and distances.

Main Methods:

  • Developed a quantum teleportation system utilizing independent photons.
  • Transmitted quantum states over a 64-km-long fiber optic channel.

Main Results:

  • Achieved a quantum teleportation rate of 7.1 ± 0.4 Hz.
  • Obtained an average single-photon fidelity of ≥90.6 ± 2.6%, surpassing the classical limit of 2/3.
  • Successfully transferred unknown quantum states over a 64-km fiber link.

Conclusions:

  • This high-rate, long-distance quantum teleportation is a key milestone for building quantum networks.
  • The demonstrated system supports future quantum internet development and quantum information applications.