| 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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