2024
DOI: 10.1002/qute.202400193
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Birefringent Spin‐Photon Interface Generates Polarization Entanglement

Nikita Leppenen,
Dmitry S. Smirnov

Abstract: A spin‐photon interface based on the luminescence of a singly charged quantum dot in a micropillar cavity allows for the creation of photonic entangled states. Current devices suffer from cavity birefringence, which limits the generation of spin‐photon entanglement. In this study, we conduct a theoretical analysis of the light absorption and emission by the interface with an anisotropic cavity and derive the maximal excitation and spin‐photon entanglement conditions. It is shown that the concurrence of the spi… Show more

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