An optical quantum thermometer with submicron resolution based on the cross-relaxation phenomenon of spin levels

An optical quantum thermometer with a submicron spatial resolution that is based on the physical phenomenon of optical response in the system of spin centers in silicon carbide under conditions of cross-relaxation between the optically active centers in quadruplet spin state and triplet centers, where there is anomalously strong dependence of the splitting of the fine structure on temperature, has been proposed.