Magic Wavelengths of the Yb 6s² ¹S₀- 6s6p ³P₁ Intercombination Transition

We calculate and measure the magic wavelengths for the the narrow 6s^{2 1}S₀ - 6s6p ³P₁ intercombination transition of the neutral ytterbium atom. The calculation is performed with the ab initio configuration interaction (CI) + all-order method. The measurement is done with laser spectroscopy on cold atoms in an optical dipole trap. The magic wavelengths are determined to be 1035.68(4) nm for the π transition (∆m= 0) and 1036.12(3) nm for the σ transitions (|∆m|= 1) in agreement with the calculated values. Laser cooling on the narrow intercombination transition could achieve better results for atoms in an optical dipole trap when the trap wavelength is tuned to near the magic wavelength.