Self-testing and certification using trusted quantum inputs

Šupić, Ivan; Hoban, Matty J.; Domingo Colomer, Laia and Acín, Antonio. 2020. Self-testing and certification using trusted quantum inputs. New Journal of Physics, 22(073006), ISSN 1367-2630 [Article]

[img]
Preview
Text
Šupić et al (2020) Self-testing and certi cation using trusted quantum inputs.pdf - Published Version
Available under License Creative Commons Attribution.

Download (920kB) | Preview
[img] Text
Self_testing_and_different_nonlocality_scenarios.pdf - Accepted Version
Permissions: Administrator Access Only
Available under License Creative Commons Attribution.

Download (572kB)

Abstract or Description

Device-independent certification of quantum devices is of crucial importance for the development of secure quantum information protocols. So far, the most studied scenario corresponds to a system consisting of different non-characterized devices that observers probe with classical inputs to obtain classical outputs. The certification of relevant quantum properties follows from the observation of correlations between these events that do not have a classical counterpart. In the fully device-independent scenario no assumptions are made on the devices and therefore their non-classicality follows from Bell non-locality. There exist other scenarios, known as semi-device-independent, in which assumptions are made on the devices, such as their dimension, and non-classicality is associated to the observation of other types of correlations with no classical analogue. More recently, the use of trusted quantum inputs for certification has been introduced. The goal of this work is to study the power of this formalism and describe self-testing protocols in various settings using trusted quantum inputs. We also relate these different types of self-testing to some of the most basic quantum information protocols, such as quantum teleportation. Finally, we apply our findings to quantum networks and provide methods for estimating the quality of the whole network, as well as of parts of it.

Item Type:

Article

Identification Number (DOI):

https://doi.org/10.1088/1367-2630/ab90d1

Keywords:

self-testing, nonlocality, certification, teleportation

Departments, Centres and Research Units:

Computing

Dates:

DateEvent
6 May 2020Accepted
3 July 2020Published

Item ID:

29254

Date Deposited:

21 Sep 2020 10:24

Last Modified:

22 Sep 2020 17:21

Peer Reviewed:

Yes, this version has been peer-reviewed.

URI:

http://research.gold.ac.uk/id/eprint/29254

View statistics for this item...

Edit Record Edit Record (login required)