Experimentally Robust Self-testing for Bipartite and Tripartite Entangled States

Abstract

Self-testing refers to a method with which a classical user can certify the state and measurements of quantum systems in a device-independent way. Especially, the self-testing of entangled states is of great importance in quantum information process. A comprehensible example is that violating the CHSH inequality maximally necessarily implies the bipartite shares a singlet. One essential question in self-testing is that, when one observes a non-maximum violation, how close is the tested state to the target state (which maximally violates certain Bell inequality)? The answer to this question describes the robustness of the used self-testing criterion, which is highly important in a practical sense. Recently, J. Kaniewski predicts two analytic self-testing bounds for bipartite and tripartite systems. In this work, we experimentally investigate these two bounds with high quality two-qubit and three-qubit entanglement sources. The results show that these bounds are valid for various of entangled states we prepared, and thus, we implement robust self-testing processes which improve the previous results significantly.

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Cited by in corpus (16)

• Self-testing of quantum systems: a review
• Experimental Optimal Verification of Entangled States using Local Measurements
• Experimental investigation of partially entangled states for device-independent randomness generation and self-testing protocols
• Robust self-testing of two-qubit states
• Experimental self-characterization of quantum measurements
• Efficient Online Quantum Generative Adversarial Learning Algorithms with Applications
• Efficient Bipartite Entanglement Detection Scheme with a Quantum Adversarial Solver
• Experimental demonstration of one-sided device-independent self-testing of any pure two-qubit entangled state
• Robust Self-Testing of Multiparticle Entanglement
• Self-testing of binary Pauli measurements requiring neither entanglement nor any dimensional restriction
• Directly Characterizing the Coherence of Quantum Detectors by Sequential Measurement
• Certification of Genuine Multipartite Entanglement with General and Robust Device-independent Witnesses
• Experimental self-testing for photonic graph states
• Observation of Braid-Protected Unpaired Exceptional Points
• Experimental certification of ensembles of high-dimensional quantum states with independent quantum devices
• Robust self-testing and certified randomness based on chained Bell inequality