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Updated: Jul 30, 2025
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
9.0K
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
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.
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.
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