Single-Photon Emitter at 80 K Based on a Dielectric Nanoantenna with a CdSe/ZnSe Quantum Dot

The emission characteristics of a source of single photons based on an epitaxial heterostructure with CdSe/ZnSe quantum dots and a cylindrical waveguide with a varying cross section formed in a resist layer by electron-beam lithography are investigated. It is shown that a flux of single photons at a wavelength of 530 nm with an average rate of about 1 MHz and the value g(2)(0) = 0.15 ± 0.03 of the second-order correlation function at zero delay can be generated under optical pumping at 80 K.