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Towards Device-Independent Information Processing on General Quantum Networks

Lee, Ciarán M. and Hoban, Matty J.. 2018. Towards Device-Independent Information Processing on General Quantum Networks. Physical Review Letters, 120(2), ISSN 0031-9007 [Article]

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Abstract or Description

The violation of certain Bell inequalities allows for device-independent information processing secure against nonsignaling eavesdroppers. However, this only holds for the Bell network, in which two or more agents perform local measurements on a single shared source of entanglement. To overcome the practical constraints that entangled systems can only be transmitted over relatively short distances, large-scale multisource networks have been employed. Do there exist analogs of Bell inequalities for such networks, whose violation is a resource for device independence? In this Letter, the violation of recently derived polynomial Bell inequalities will be shown to allow for device independence on multisource networks, secure against nonsignaling eavesdroppers.

Item Type:

Article

Identification Number (DOI):

https://doi.org/10.1103/PhysRevLett.120.020504

Departments, Centres and Research Units:

Computing

Dates:

DateEvent
16 November 2017Accepted
10 January 2018Published

Item ID:

24267

Date Deposited:

12 Sep 2018 09:47

Last Modified:

12 Sep 2018 09:47

Peer Reviewed:

Yes, this version has been peer-reviewed.

URI:

http://research.gold.ac.uk/id/eprint/24267

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