Magic wavelengths of the Sr (5s2 1S0-5s5p 3P1) intercombination transition near the 5s5p 3P1-5p2 3P2 transition

Predicting magic wavelengths accurately requires precise knowledge of electric dipole matrix elements of nearby atomic transitions. As a result, measurements of magic wavelengths allow us to test theoretical predictions for the matrix elements that frequently cannot be probed by any other methods. Here, we calculate and measure a magic wavelength near 473 nm of the 5s2 1S0 -5s5p 3P1 intercombination transition of 88Sr. Experimentally, we find 473.371(6) nm for Am = 0 (pi transition) and 473.117(15) nm for Am = -1 (sigma - transition). Theoretical calculations yield 473.375(22) and 473.145(20) nm, respectively. Determining magic wavelengths nearby the dominant 461-nm probe transition of 88Sr holds promise for state insensitive interfacing of strontium atoms and nanophotonic devices with a narrow band of operating wavelengths. Furthermore, the 3P1 polarizability is dominated by the contributions to the 5p2 3P levels, and excellent agreement of theory and experiment validates both theoretical values of these matrix elements and estimates of their uncertainties.