Experimental demonstration of one-sided device-independent self-testing of any pure two-qubit entangled state

被引：14

作者：

Bian, Zhihao ^{[1
,2
]}

Majumdar, A. S. ^{[3
]}

Jebarathinam, C. ^{[3
,4
,5
]}

Wang, Kunkun ^{[1
]}

Xiao, Lei ^{[1
,6
]}

Zhan, Xiang ^{[1
,7
]}

Zhang, Yongsheng ^{[8
,9
]}

Xue, Peng ^{[1
]}

机构：

[1] Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China

[2] Jiangnan Univ, Sch Sci, Wuxi 214122, Jiangsu, Peoples R China

[3] SN Bose Natl Ctr Basic Sci, Kolkata 700106, India

[4] Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan

[5] Natl Cheng Kung Univ, Ctr Quantum Frontiers Res & Technol QFort, Tainan 701, Taiwan

[6] Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China

[7] Nanjing Univ Sci & Technol, Sch Sci, Nanjing 210094, Jiangsu, Peoples R China

[8] Univ Sci & Technol China, Key Lab Quantum Informat, CAS, Hefei 230026, Anhui, Peoples R China

[9] Chinese Acad Sci, Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China

来源：

PHYSICAL REVIEW A | 2020年 / 101卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Quantum entanglement;

D O I：

10.1103/PhysRevA.101.020301

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate one-sided device-independent self-testing of any pure two-qubit entangled state based on a fine-grained steering inequality. The maximum violation of a fine-grained steering inequality can be used to witness certain steerable correlations, which certify all pure two-qubit entangled states. Our experimental results identify which particular pure two-qubit entangled state has been self-tested and which measurement operators are used on the untrusted side. Furthermore, we analytically derive the robustness bound of our protocol, enabling our subsequent experimental verification of robustness through state tomography. Finally, we ensure that the requisite no-signaling constraints are maintained in the experiment.

引用

页数：6

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