This review discusses various development methods for the single-photon sources (SPS).Earlier, the first part of the review (Photonics Russia. 2024; 18(5): 376–396) has discussed the requirements for single-photon sources and their characteristic criteria, and described the single-photon sources based on the single ions and single atoms. The second part of the review (Photonics Russia. 2024; 18(8): 610–620) has considered the SPSs based on the quantum dots and on the color centers in crystals. The third part (Photonics Russia. 2025; 19(1): 28–38) has considered the single-photon sources based on the carbon nanotubes and defects in them (defect engineering in nanotubes), on the nanocrystals and layered nanocrystals. The final section examines the single-photon sources on the collective states in the ensemble systems, on the single molecules and metal ions in a polymer matrix, as well as the sources on nonlinear crystals.
Tags: ensemble sources ensemble systems four-wave mixing (fwm) single molecules single-photon source (sps) ансамблевые источники ансамблевые системы одиночные молекулы четырехволновое смешение
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