Measurement of the 87Rb D-line vector tune-out wavelength

Abstract

We report a precision measurement of a tune-out wavelength for 87Rb using circularly polarized light. A tune-out wavelength characterizes a zero in the electric polarizability of the atom. For circularly polarized light, the total polarizability depends on both the scalar and vector polarizability components. This shifts the location of the tune-out wavelength and makes it sensitive to different combinations of atomic dipole matrix elements than the scalar polarizability alone. Using ${\sigma }_{-}$ polarized light with an an estimated purity of 0.9931(1), we observe a tune-out wavelength of 785.1522(3) nm, which agrees with theoretical expectations when small contributions from the core electrons and off-resonant valence states are taken into account.

5 pages, 2 figures

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• Scattering in Mixed Dimensions with Ultracold Gases
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• A Bose-Einstein condensate interferometer with macroscopic arm separation
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Cited by in corpus (3)

• Electric dipole transition amplitudes for atoms and ions with one valence electron
• Tune-out wavelength for the thulium atom near 576 nm
• Optimal strategies for low-noise detection of atoms using resonant frequency modulation spectroscopy in cold atom interferometers