Self-testing quantum states via nonmaximal violation in Hardy's
test of nonlocality

J 2022

Self-testing quantum states via nonmaximal violation in Hardy's test of nonlocality

RAI, Ashutosh; Matej PIVOLUSKA; Souradeep SASMAL; Manik BANIK; Sibasish GHOSH et. al.

Basic information

Original name

Self-testing quantum states via nonmaximal violation in Hardy's test of nonlocality

Authors

RAI, Ashutosh; Matej PIVOLUSKA (703 Slovakia, guarantor, belonging to the institution); Souradeep SASMAL; Manik BANIK; Sibasish GHOSH and Martin PLESCH (703 Slovakia, belonging to the institution)

Edition

PHYSICAL REVIEW A, UNITED STATES, AMER PHYSICAL SOC, 2022, 2469-9926

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10306 Optics

Country of publisher

United States of America

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 2.900

RIV identification code

RIV/00216224:14610/22:00125966

Organization unit

Institute of Computer Science

DOI

http://dx.doi.org/10.1103/PhysRevA.105.052227

UT WoS

000817039700009

EID Scopus

2-s2.0-85131329068

Keywords in English

non-locality; entanglement; Hardy non-locality; self-testing; device-independence

Abstract

In the original language

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.

Links

MUNI/G/1596/2019, interní kód MU

Name: Development of algorithms for application of quantum computers in electronic-structure calculations in solid-state physics and chemistry (Acronym: Qubits4PhysChem)

Investor: Masaryk University, INTERDISCIPLINARY - Interdisciplinary research projects

Cite

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.

@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.

Přehled o publikaci