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Impact of temporal correlations, coherence, and postselection on two-photon interference

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Autor(es):
Cardoso, Fernando Redivo ; Lee, Jaewon ; Checchinato, Riccardo ; Littmann, Jan-Heinrich ; De Gregorio, Marco ; Hoefling, Sven ; Schneider, Christian ; Villas-Boas, Celso J. ; Predojevic, Ana
Número total de Autores: 9
Tipo de documento: Artigo Científico
Fonte: PHYSICAL REVIEW RESEARCH; v. 7, n. 1, p. 6-pg., 2025-02-21.
Resumo

Two-photon interference is an indispensable resource in quantum photonics, but it is not straightforward to achieve. The cascaded generation of photon pairs contains intrinsic temporal correlations that negatively affect the ability of such sources to perform two-photon interference, thus hindering applications. We report on how such correlation interplays with decoherence and temporal postselection, and under which conditions temporal postselection could improve two-photon interference visibility. Our study identifies crucial parameters and points the way to a source with optimal performance. (AU)

Processo FAPESP: 22/00209-6 - Tecnologias quânticas de segunda geração
Beneficiário:Celso Jorge Villas-Bôas
Modalidade de apoio: Auxílio à Pesquisa - Temático