2013/01/14 by M. S. Safronova, Safronova, M. S., U. I. Safronova +3
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic Physics (physics.atom-ph) #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Optics (physics.optics) #Quantum Gases (cond-mat.quant-gas) #Quantum Physics (quant-ph) #Quantum optics and atomic interactions #cond-mat.quant-gas #physics.atom-ph #physics.optics #quant-ph
paper · pdf · doi:10.48550/arxiv.1301.3181
9 pages, 4 figures. arXiv admin note: text overlap with arXiv:1206.7115
arxiv created 2013/01/14 · openalex publication_date 2013/01/14 · arxiv updated 2013/01/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We carry out a systematic study of the static and dynamic polarizabilities of the potassium atom using a first-principles high-precision relativistic all-order method in which all single, double, and partial triple excitations of the Dirac-Fock wave functions are included to all orders of perturbation theory. Recommended values are provided for a large number of electric-dipole matrix elements. Static polarizabilities of the 4s, 4pj, 5s, 5pj, and 3dj states are compared with other theory and experiment where available. We use the results of the polarizability calculations to identify magic wavelengths for the 4s-np transitions for n = 4, 5, i.e. those wavelengths for which the two levels have the same ac Stark shifts. These facilitate state-insensitive optical cooling and trapping. The magic wavelengths for the 4s-5p transitions are of particular interest for attaining a quantum gas of potassium at high phase-space density. We find 20 such wavelengths in the technically interest region of 1050-1130 nm. Uncertainties of all recommended values are estimated.