Tunable entangled photon-pair generation in a liquid crystal.

ABSTRACT: Liquid crystals, with their ability to self-assemble, strong response to an electric field and integrability into complex systems, are key materials in light-beam manipulation¹. The recently discovered ferroelectric nematic liquid crystals^2,3 also have considerable second-order optical nonlinearity, making them a potential material for nonlinear optics^4,5. Their use as sources of quantum light could considerably extend the boundaries of photonic quantum technologies⁶. However, spontaneous parametric down-conversion, the basic source of entangled photons⁷, heralded single photons⁸ and squeezed light⁹, has so far not been observed in liquid crystals-or in any liquids or organic materials. Here we implement spontaneo

SUBMITTER: Sultanov V 

PROVIDER: S-EPMC11236711 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature