Bell scenarios with communication

Classical and quantum physics provide fundamentally different predictions about experiments with separate observers that do not communicate, a phenomenon known as quantum nonlocality. This insight is a key element of our present understanding of quantum physics, and also enables a number of informat...

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Principais autores: Brask, J. B., Araújo, Rafael Chaves Souto
Formato: article
Idioma:English
Publicado em: IOP Publishing
Assuntos:
Quantum nonlocality
Causal models
Bell inequality
Local hidden variable
Endereço do item:https://repositorio.ufrn.br/handle/123456789/30214
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spelling ri-123456789-302142022-10-19T21:58:52Z Bell scenarios with communication Brask, J. B. Araújo, Rafael Chaves Souto Quantum nonlocality Causal models Bell inequality Local hidden variable Classical and quantum physics provide fundamentally different predictions about experiments with separate observers that do not communicate, a phenomenon known as quantum nonlocality. This insight is a key element of our present understanding of quantum physics, and also enables a number of information processing protocols with security beyond what is classically attainable. Relaxing the pivotal assumption of no communication leads to new insights into the nature quantum correlations, and may enable new applications where security can be established under less strict assumptions. Here, we study such relaxations where different forms of communication are allowed. We consider communication of inputs, outputs, and of a message between the parties. Using several measures, we study how much communication is required for classical models to reproduce quantum or general no-signalling correlations, as well as how quantum models can be augmented with classical communication to reproduce no-signalling correlations 2020-09-28T14:38:28Z 2020-09-28T14:38:28Z 2017-01-27 article BRASK, J B; CHAVES, R. Bell scenarios with communication. Journal Of Physics A: Mathematical and Theoretical, [S.L.], v. 50, n. 9, p. 094001, 27 jan. 2017. Disponível em: https://iopscience.iop.org/article/10.1088/1751-8121/aa5840. Acesso em: 17 set. 2020. http://dx.doi.org/10.1088/1751-8121/aa5840. 1751-8113 1751-8121 https://repositorio.ufrn.br/handle/123456789/30214 10.1088/1751-8121/aa5840 en IOP Publishing
institution Repositório Institucional
collection RI - UFRN
language English
topic Quantum nonlocality
Causal models
Bell inequality
Local hidden variable
spellingShingle Quantum nonlocality
Causal models
Bell inequality
Local hidden variable
Brask, J. B.
Araújo, Rafael Chaves Souto
Bell scenarios with communication
description Classical and quantum physics provide fundamentally different predictions about experiments with separate observers that do not communicate, a phenomenon known as quantum nonlocality. This insight is a key element of our present understanding of quantum physics, and also enables a number of information processing protocols with security beyond what is classically attainable. Relaxing the pivotal assumption of no communication leads to new insights into the nature quantum correlations, and may enable new applications where security can be established under less strict assumptions. Here, we study such relaxations where different forms of communication are allowed. We consider communication of inputs, outputs, and of a message between the parties. Using several measures, we study how much communication is required for classical models to reproduce quantum or general no-signalling correlations, as well as how quantum models can be augmented with classical communication to reproduce no-signalling correlations
format article
author Brask, J. B.
Araújo, Rafael Chaves Souto
author_facet Brask, J. B.
Araújo, Rafael Chaves Souto
author_sort Brask, J. B.
title Bell scenarios with communication
title_short Bell scenarios with communication
title_full Bell scenarios with communication
title_fullStr Bell scenarios with communication
title_full_unstemmed Bell scenarios with communication
title_sort bell scenarios with communication
publisher IOP Publishing
publishDate 2020
url https://repositorio.ufrn.br/handle/123456789/30214
work_keys_str_mv AT braskjb bellscenarioswithcommunication
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