Nonlocal realism tests and quantum state tomography in Sagnac-based type-II polarization-entanglement SPDC-source

We have experimentally created a robust, ultrabright and phase-stable polarization-entangled state close to maximally entangled Bell-state with %98-fidelity using the type-II spontaneous parametric down-conversion (SPDC) process in periodically-poled KTiOPO4 (PPKTP) collinear crystal inside a Sagnac...

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Bibliographic Details

Published in:	Heliyon
Main Authors:	Ali Motazedifard, S.A. Madani, J.J. Dashkasan, N.S. Vayaghan
Format:	Article
Language:	English
Published:	Elsevier 2021-06-01
Subjects:	Spontaneous parametric down-conversion (SPDC) Polarization-entanglement Sagnac interferometer Non-local realism Quantum state tomography (QST) Entropy
Online Access:	http://www.sciencedirect.com/science/article/pii/S2405844021014870