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arXiv · 2405.04360

Polarization-entangled photon pair source using beam displacers and thin crystals

Minjae Hong·Rodrigo Gomez·Valerio Flavio Gili·Jorge Fuenzalida·Markus Gräfe
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Abstract

We present an experimental implementation of a polarization-entangled photon pair source based on beam displacers. The down-converted photons are emitted via spontaneous parametric down-conversion in a non-degenerate and type-0 process. We obtain a state fidelity of $F=0.975\pm0.004$ and violate a Clauser-Horne-Shimony-Holt inequality with $S=2.75\pm0.01$. Our source also uses thin crystals for applications in quantum imaging, taking advantage of the large number of spatial modes. We estimate that our source could produce 550$\pm$12 spatial modes.

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Minjae Hong, Rodrigo Gomez, Valerio Flavio Gili, Jorge Fuenzalida, Markus Gräfe. 2024-05-07. Polarization-entangled photon pair source using beam displacers and thin crystals. https://doi.org/10.1364/ol.536820

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