Autor(es)

Lustosa, Fabricio ; Barreto, Diego G. ; Lima, Eduardo C. ; Cruz, Luciano S. ; Dieguez, Pedro R. ; Marques, Breno

• Tipo de documento: Artigo Científico
• Fonte: NEW JOURNAL OF PHYSICS; v. 27, n. 5, p. 10-pg., 2025-05-01.

Resumo

The emergence of realism from the quantum domain, often associated with the suppression of quantum features, is a key aspect of the quantum-to-classical transition. In this work, we implement an experiment with Werner states subjected to weak measurements to investigate how quantum correlations influence the emergence of realism. Maximally entangled twin photons, generated via spontaneous parametric down-conversion, are used to prepare Werner states. We employ a monitoring model that smoothly transitions between weak and strong nonselective measurements, along with an irrealism measure. Our findings demonstrate that quantum discord suppression induced by weak measurements, known as weak quantum discord, drives the emergence of realism. Additionally, our findings highlight the robustness of the irrealism measure in quantum correlation-based scenarios. (AU)

• Processo FAPESP: 23/03513-0 - Fonte de luz correlacionadas quanticamente em chips fotônicos
• Beneficiário: Eduardo da Costa Lima
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 23/11444-9 - Implementação em chips fotônicos de protocolos de informação quântica utilizando qudits
• Beneficiário: Diego Guimarães Barreto
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 21/14303-1 - Chips fotônicos para implementação de protocolos de informação quântica
• Beneficiário: Breno Marques Goncalves Teixeira
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores