Study presents a new, highly efficient converter of quantum information carriers

https://phys.org/news/2023-05-highly-efficient-quantum-carriers.html

"refractive index of lithium niobate crystal altered depending on changes in external electric signals... time-varying optical thickness implementing time lens... increase refractive index in stages... achieve strong effect without destroying lens allowing modifications of quantum light pulses... transferring single photons between different parts of world, thus giving rise to the quantum Internet... car headlights, lighthouses, railroad signals, and even smartphone cameras"