RAI, Ashutosh, Matej PIVOLUSKA, Souradeep SASMAL, Manik BANIK, Sibasish GHOSH and Martin PLESCH. Self-testing quantum states via nonmaximal violation in Hardy's test of nonlocality. PHYSICAL REVIEW A. UNITED STATES: AMER PHYSICAL SOC, 2022, vol. 105, No 5, p. 1-8. ISSN 2469-9926. Available from: https://dx.doi.org/10.1103/PhysRevA.105.052227. |
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@article{1859044, author = {Rai, Ashutosh and Pivoluska, Matej and Sasmal, Souradeep and Banik, Manik and Ghosh, Sibasish and Plesch, Martin}, article_location = {UNITED STATES}, article_number = {5}, doi = {http://dx.doi.org/10.1103/PhysRevA.105.052227}, keywords = {non-locality; entanglement; Hardy non-locality; self-testing; device-independence}, language = {eng}, issn = {2469-9926}, journal = {PHYSICAL REVIEW A}, title = {Self-testing quantum states via nonmaximal violation in Hardy's test of nonlocality}, url = {https://journals.aps.org/pra/abstract/10.1103/PhysRevA.105.052227}, volume = {105}, year = {2022} }
TY - JOUR ID - 1859044 AU - Rai, Ashutosh - Pivoluska, Matej - Sasmal, Souradeep - Banik, Manik - Ghosh, Sibasish - Plesch, Martin PY - 2022 TI - Self-testing quantum states via nonmaximal violation in Hardy's test of nonlocality JF - PHYSICAL REVIEW A VL - 105 IS - 5 SP - 1-8 EP - 1-8 PB - AMER PHYSICAL SOC SN - 24699926 KW - non-locality KW - entanglement KW - Hardy non-locality KW - self-testing KW - device-independence UR - https://journals.aps.org/pra/abstract/10.1103/PhysRevA.105.052227 N2 - Self-testing protocols enable the certification of quantum devices without demanding full knowledge about their inner workings. A typical approach in designing such protocols is based on observing nonlocal correlations which exhibit maximum violation in a Bell test. We show that in the Bell experiment known as Hardy's test of nonlocality, not only does the maximally nonlocal correlation self-test a quantum state, rather a nonmaximal nonlocal behavior can serve the same purpose. We, in fact, completely characterize all such behaviors leading to a self-test of every pure two-qubit entangled state except for the maximally entangled ones. Apart from presenting an alternative self-testing protocol, our method provides a powerful tool towards characterizing the complex boundary of the set of quantum correlations. ER -
RAI, Ashutosh, Matej PIVOLUSKA, Souradeep SASMAL, Manik BANIK, Sibasish GHOSH and Martin PLESCH. Self-testing quantum states via nonmaximal violation in Hardy's test of nonlocality. \textit{PHYSICAL REVIEW A}. UNITED STATES: AMER PHYSICAL SOC, 2022, vol.~105, No~5, p.~1-8. ISSN~2469-9926. Available from: https://dx.doi.org/10.1103/PhysRevA.105.052227.
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