Theory of "magic" optical traps for Zeeman-insensitive clock transitions in alkalis

Details Theory of "magic" optical traps for Zeeman-insensitive clock transitions in alkalis Theory of "magic" optical traps for Zeeman-insensitive clock transitions in alkalis

2009-12-16

arxiv.org/abs/0912.3233v3

Phys. Rev. A 81, 051606(R) (2010)

Physics

Condensed Matter

Quantum Gases

4 pages, 2 fig, 1 table (v3: added discussion of the correct way of computing polarizabilities)

Scientific paper

Precision measurements and quantum information processing with cold atoms may benefit from trapping atoms with specially engineered, "magic" optical fields. At the magic trapping conditions, the relevant atomic properties remain immune to strong perturbations by the trapping fields. Here we develop a theoretical analysis of a recently observed magic trapping for especially valuable Zeeman-insensitive clock transitions in alkali-metal atoms. The involved mechanism relies on applying "magic" bias B-field along circularly polarized trapping laser field. We map out these B-fields as a function of trapping laser wavelength for all commonly-used alkalis.

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