Magic frequencies for cesium primary frequency standard

Details Magic frequencies for cesium primary frequency standard Magic frequencies for cesium primary frequency standard

2008-09-16

arxiv.org/abs/0809.2825v1

Phys.Rev.Lett.101:220801,2008

Physics

Atomic Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.101.220801

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.

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