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Semi-Measurement-Device-Independent Quantum State Tomography |
| Jian Li, Jia-Li Zhu, Jiang Gao, Zhi-Guang Pang, and Qin Wang* |
| Institute of Quantum Information and Technology, Nanjing University of Posts and Telecommunications, Nanjing 210003, China |
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| Cite this article: |
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Jian Li, Jia-Li Zhu, Jiang Gao et al 2022 Chin. Phys. Lett. 39 070303 |
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Abstract As a fundamental tool in the quantum information field, quantum state tomography can be used to reconstruct any unknown state. Generally, it needs a tomographically complete set of measurements, such that all measurements are fully characterized. Here, we propose a semi-measurement-device-independent quantum state tomography protocol, which only needs one characterized measurement and a trusted ancillary system. Furthermore, we perform corresponding experiments using linear optics. Our results show that the average state fidelity is as high as 0.973, verifying the effectiveness of the scheme.
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Received: 23 March 2022
Editors' Suggestion
Published: 27 June 2022
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| PACS: |
03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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42.65.Lm
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(Parametric down conversion and production of entangled photons)
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