Quantum technologies in optical measurements

The importance of light measurements from the point of view of ensuring accuracy and saving energy is considered. The study object is the quantum approach in the reproduction of optical units of measurement. The study subject is modern methodology in theoretical metrology, based on the concept of the New SI (2019). The purpose of the study is to analyze the current state of light measurements from the view point of ensuring accuracy and their energy efficiency. The analysis of quantum technologies of reproduction of optical units – candela, lumen is performed. The standards of Ukraine of candela and lumen, which were developed at the National Scientific Center “Institute of Metrology”, Kharkiv, are analyzed. Practical aspects of realization of quantum effects on the example of modern light-emitting diodes which principle of action is based on quantum points are defined. Examples of the practical implementation of quantum photonics in the perspective of the next decade are identified. The opinion is expressed that the development of quantum technologies and practical achievements in the counting of individual photons bring us closer to the creation of devices of a new generation and to new achievements in precision and practical photometry.