What is it about?
Miniature atomic clocks (MACs) have found numerous important applications such as global navigation satellite systems, broadband and highly secure communications, remote sensing, etc. The frequency stability of these devices is one of the main characteristics. Variations in external (Earth's) magnetic field is one of the most serious limiting factors. In our work, we propose a novel method how to overcome this problem with the help of Pounder-Drever-Hall-like technique.
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Why is it important?
The results pave the wave for developing next-generation miniature atomic clocks with the long-term fractional frequency stability in the low 10^(-13) range. This will make significant progress in those areas of science and technology where atomic clocks, and it will also give stimulus to the emergence of new areas.
Perspectives
I believe that, together with other recently proposed methods for suppressing frequency shifts in miniature atomic clocks, the results obtained pave the way for a revolutionary leap in the development of new-generation MACs with significantly enhanced long-term frequency stability.
Denis Brazhnikov
Institute of Laser Physics SB RAS
Read the Original
This page is a summary of: Reduction of magnetic-field-induced shift in quantum frequency standards based on coherent population trapping, Journal of Applied Physics, April 2025, American Institute of Physics,
DOI: 10.1063/5.0265574.
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