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
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.
收稿日期: 2022-03-23
Editors' Suggestion
出版日期: 2022-06-27
:
03.67.Dd
(Quantum cryptography and communication security)
03.67.Hk
(Quantum communication)
42.65.Lm
(Parametric down conversion and production of entangled photons)
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2022, Vol. 39 
