Highly directional single-photon source

Abstract Single-photon emitters are a pivotal element in quantum technologies, but the generation of single photons along well-defined directions generally involves sophisticated configurations. Here, we propose photon source capable generating with high efficiency guided modes. Specifically, consider emitter placed periodically patterned linear waveguide. The latter is designed to host mode over spectral range interest and display divergence photonic density states at an emission wavelength close period. Photons preferentially emitted waveguide near that region. We predict nearly all can be made occur reduction temporal uncertainty by two orders magnitude. Our study opens conceptually new direction production degree directionality reduced uncertainty.