Frequency-insensitive spatiotemporal shaping of single photon in multiuser quantum network

Abstract Exploiting the fundamental features of quantum mechanics, an entanglement-based network offers a promising platform for many dramatic applications such as multi-user cryptography. Nevertheless, implementation large-scale in real-world scenarios remains challenging owing to multiple scattering events complex environment, particularly those frequency-sensitive scatterings that disturb correlation both spatially and temporally. Here, we demonstrate frequency-insensitive spatiotemporal control entangled photons fully connected by leveraging Fourier-transform setup genetic algorithm. Such approach can effectively improve entanglement distribution process through multimode fiber while characteristic be maintained well after shaping. Our scheme serve bridging technology establish between remote nodes spectrally interconnected systems has great potential future networks.