Hertz-rate metropolitan quantum teleportation

• URL: http://arxiv.org/abs/2303.13866v1
• Date: Fri, 24 Mar 2023 09:03:35 GMT
• Title: Hertz-rate metropolitan quantum teleportation
• Authors: 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
• Abstract summary: We demonstrate a quantum teleportation system which transfers quantum states carried by independent photons at a rate of 7.1$pm$0.4 Hz over 64-km-long fiber channel. An average single-photon fidelity of $geqslant$ 90.6$pm$2.6% is achieved, which exceeds the maximum fidelity of 2/3 in classical regime. Our result marks an important milestone towards quantum networks and opens the door to exploring quantum entanglement based informatic applications for the future quantum internet.
• Score: 14.255276189916845
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum teleportation can transfer an unknown quantum state between distant quantum nodes, which holds great promise in enabling large-scale quantum networks. To advance the full potential of quantum teleportation, quantum states must be faithfully transferred at a high rate over long distance. Despite recent impressive advances, a high-rate quantum teleportation system across metropolitan fiber networks is extremely desired. Here, we demonstrate a quantum teleportation system which transfers quantum states carried by independent photons at a rate of 7.1$\pm$0.4 Hz over 64-km-long fiber channel. An average single-photon fidelity of $\geqslant$ 90.6$\pm$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.

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