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Special Issue:
SPECIAL TOPIC — Quantum communication and quantum network
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| SPECIAL TOPIC — Quantum communication and quantum network |
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Effect of quantum measurement errors on witnessing network topology |
| Shu-Yuan Yang(杨舒媛)1, Kan He(贺衎)2,†, and Ming-Xing Luo(罗明星)3,‡ |
1 School of Mathematics, North University of China, Taiyuan 030051, China;
2 College of Mathematics, Taiyuan University of Technology, Taiyuan 030024, China;
3 School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China |
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Abstract The fragility and stochastic behavior of quantum sources make it crucial to witness the topology of quantum networks. Most previous theoretical methods are based on perfect assumptions of quantum measurements. In this work, we propose a method to witness network topology under imperfect assumptions of quantum measurements. We show that the discrimination between star and triangle networks depends on the specific error tolerances of local measurements. This extends recent results for witnessing the triangle network [Phys. Rev. Lett. 132 240801 (2024)].
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Received: 15 May 2025
Revised: 10 June 2025
Accepted manuscript online: 12 June 2025
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PACS:
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03.67.-a
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(Quantum information)
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03.67.Hk
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(Quantum communication)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12271394 and 62172341) and the Sichuan Natural Science Foundation (Grant Nos. 2024NSFSC1365 and 2024NSFSC1375). |
Corresponding Authors:
Kan He, Ming-Xing Luo
E-mail: hekan@tyut.edu.cn,hekanquantum@163.com;mxluo@swjtu.edu.cn
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Cite this article:
Shu-Yuan Yang(杨舒媛), Kan He(贺衎), and Ming-Xing Luo(罗明星) Effect of quantum measurement errors on witnessing network topology 2025 Chin. Phys. B 34 090302
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