2008/09/16 by V. V. Flambaum, V. A. Dzuba, Andrei Derevianko +1 · 1 citation
Physics and Astronomy · #Advanced Fiber Laser Technologies #Advanced Frequency and Time Standards #Atomic physics #Caesium #Cold Atom Physics and Bose-Einstein Condensates #Frequency standard #Ground state #Hyperfine structure #Laser #Magnetic field #Materials science #Microwave #Nuclear physics #Optics #Physics #Quantum mechanics #Rubidium #Spectral line #Stark effect #physics.atom-ph
paper · pdf · doi:10.1103/physrevlett.101.220801
published as Phys.Rev.Lett.101:220801,2008 · 4 pages, 2 figures
arxiv created 2008/09/16 · openalex publication_date 2008/11/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider microwave hyperfine transitions in the ground state of cesium and rubidium atoms which are presently used as the primary and the secondary frequency standards. The atoms are confined in an optical lattice generated by a circularly polarized laser field. We demonstrate that applying an external magnetic field with appropriately chosen direction may cancel dynamic Stark frequency shift making the frequency of the clock transition insensitive to the strengths of both the laser and the magnetic fields. This can be attained for practically any laser frequency which is sufficiently distant from a resonance.