Open AccessПроекционный спиновый шум в оптических квантовых датчиках на тепловых атомах
Author(s) -
A. K. Vershovskiĭ,
С.П. Дмитриев,
Г.Г. Козлов,
A. S. Pazgalev,
М. В. Петренко
Publication year - 2020
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2020.08.49533.438-19
Subject(s) - noise (video) , magnetometer , quantum noise , sensitivity (control systems) , projection (relational algebra) , physics , gyroscope , quantum , spin (aerodynamics) , optics , computational physics , magnetic field , quantum mechanics , electronic engineering , computer science , engineering , algorithm , artificial intelligence , image (mathematics) , thermodynamics
The paper theoretically and experimentally investigates the fundamental limitations imposed by spin (or atomic) quantum projection noise on the sensitivity of optical quantum sensors based on thermal atoms (this class of devices includes frequency standards, magnetometers, and gyroscopes using optical detection of electron paramagnetic resonance). The effect of increasing the rms amplitude of the projection noise in the magnetometric scheme under the influence of strong optical pumping is demonstrated, its explanation is proposed and experimentally tested - it is shown that in a wide range of pump intensities this effect is explained by the invariance of the projection noise integral power with respect to the magnetic resonance line width. An experimental study of the parameters of projection noise in a magnetometric quantum sensor was carried out, recommendations were given for optimizing the sensor parameters.