Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/7961
Title: | Self-testing quantum states via nonmaximal violation in Hardy’s test of nonlocality |
Authors: | Rai, Ashutosh Pivoluska, Matej Sasmal, Souradeep Banik, Manik Ghosh, Sibashish Plesch, Martin |
Issue Date: | 27-May-2022 |
Publisher: | Physical Review A |
Citation: | Physical Review A, 2022, Vol.105 (5), Article No.052227 |
Abstract: | 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. |
Description: | Restricted Access |
URI: | http://hdl.handle.net/2289/7961 |
ISSN: | 1050-2947 1094-1622 (Online) |
Alternative Location: | https://arxiv.org/abs/2112.06595 https://ui.adsabs.harvard.edu/abs/2022PhRvA.105e2227R/abstract https://doi.org/10.1103/PhysRevA.105.052227 |
Copyright: | 2022 American Physical Society |
Appears in Collections: | Research Papers (LAMP) |
Files in This Item:
File | Description | Size | Format | |
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2022_Physical Review A, Vol.105, 052227.pdf Restricted Access | Open Access | 3.07 MB | Adobe PDF | View/Open Request a copy |
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