We present the design of a Leonov dynamic interferometer for detecting the field of dark matter particles and obtained positive results from its testing. Unlike the Michelson interferometer, in which the arms of the interferometer are located at an angle of 90 degrees and rotate in a horizontal plane, in the Leonov interferometer, the shoulders are turned in opposite directions at an angle of 180 degrees and the light rays from the laser in the shoulders also move in opposite directions and converge on the screen, forming interference fringes. In this case, the slightest deviation of the arms of the interferometer from the horizontal leads to a sharp shift of the interference fringes on the screen. We have given a theoretical justification for the fact that the shift of interference fringes is caused by the deformation (Einstein curvature) of the field of dark matter in the field by terrestrial gravity. We have shown that the spherical field of terrestrial gravity is formed as a result of spherical deformation of the field of dark matter, which is a four-dimensional quantized space-time. We found that the carrier of the field of dark matter is a four-dimensional particle - a quantum of space-time (quanton), which has no mass but accumulates electromagnetic energy. Quanton is the only four-dimensional particle that combines time and space, and is the carrier of electromagnetism and gravity. The concentration of quantons in a unit volume characterizes the quantum density of the medium, which in accordance with the theory of Superunification sets the speed of light in vacuum. In the Earth’s gravitational field, a field of dark matter is deformed, which leads to a change in the quantum density of the medium in the vertical direction (along the radius). This leads to a change in the speed of light in the radial direction relative to the earth's horizontal. We see this fact as a shift of interference fringes when the shoulders of the dynamic interferometer are turned relative to the horizontal (Leonov effect), thereby registering a change in the concentration of dark matter particles. This experiment confirms the validity of the theory of Superunification [1-5]. Keywords: dark matter, quanton, quantized space-time, quantum density of the medium, speed of light, interferometer, gravity, theory of Superunification.