V.F. Fateev FSUE “VNIIFTRI”, Mendeleevo, Moscow region, Russiageneralfat@mail.ru Al’manac of Modern Metrology № 3 (31) 2022, pages 45–60 Abstract. A new type of quantum level is proposed and investigated — a phase optical quantum level based on measuring the effect of the gravitational delay of light waves in the Earth’s gravitational field. To measure the … Continue reading Quantum optical level on the effect of gravitational delay of a light wave and its capabilities