Atom interferometry with ultracold Mg atoms: Frequency standard and quantum sensors

A. V. Taichenachev, A. N. Goncharov, A. E. Bonert, V. I. Baraulya, M. A. Tropnikov, S. A. Kuznetsov, O. N. Prudnikov, S. N. Bagayev

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The results of theoretical and experimental studies aimed at the creation of matter wave interferometers with Mg atoms are presented. Atom-optical interferometers based on the Ramsey-Bordé scheme are of great interest for the development of optical frequency standards. Ultracold Mg atoms are promising for the development of an optical frequency standard with relative uncertainty and long-term frequency instability at a level of 10-17 - 10-18. A long-term frequency stability of 3•10-15 is obtained at an averaging time τ = 103 s while stabilizing the frequency of a 'clock' laser at 457 nm (1 S 0 → 3 P 1 transition) to narrow Ramsey-Bordé resonances of Mg atoms cooled and localized in a magneto-optical trap. The measured frequency stability is determined by the stability of the measurement system based on an optical frequency comb stabilized to the optical frequency of a Yb:YAG/I2 standard. We also present the results of theoretical studies aimed at the use of Mg atom interferometers based on Bragg diffraction for quantum sensing.

Original languageEnglish
Article number012002
Number of pages10
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 1 Jul 2020
Event28th Annual International Laser Physics Workshop, LPHYS 2019 - Gyeongju, Korea, Republic of
Duration: 8 Jul 201912 Jul 2019




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