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

We demonstrate one-sided device-independent self-testing of any pure entangled two-qubit 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 st...

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Published in:arXiv.org 2020-01
Main Authors: Bian, Zhihao, Majumdar, A S, Jebaratnam, C, Wang, Kunkun, Xiao, Lei, Zhan, Xiang, Zhang, Yongsheng, Xue, Peng
Format: Article
Language:English
Subjects:
Entangled states
Qubits (quantum computing)
Robustness
Self testing
Steering
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Majumdar, A S
Jebaratnam, C
Wang, Kunkun
Xiao, Lei
Zhan, Xiang
Zhang, Yongsheng
Xue, Peng
description We demonstrate one-sided device-independent self-testing of any pure entangled two-qubit 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-signalling constraints are maintained in the experiment.
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subjects Entangled states
Qubits (quantum computing)
Robustness
Self testing
Steering
title Experimental demonstration of one-sided device-independent self-testing of any pure two-qubit entangled state
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