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Seminário virtual do grupo de Óptica e Informação Quântica (15/05) Print E-mail
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Data: Sexta-Feira 15/05/2020, 11 am.

Palestrante: Antonio Zelaquett Khoury (UFF)

Title: Bell inequality violation and operator ordering in quantum theory

Abstract: We investigate the role played by quantum operator ordering in the correlations that characterize two-photon polarization Bell measurements. The Clauser-Horne-Shimony-Holt (CHSH) criterion is investigated in the normal ordering imposed by the photodetection theory and in the symmetric ordering that constitutes the standard prescription for building Hermitian operators from products of non commuting observables. The two approaches are obtained in a single theoretical framework, where operator ordering is directly associated with the representation used for the density matrix. Moreover, this discussion can be recast in terms of different models for the vacuum fluctuations.

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