Measurement of the spin-dipolar part of the tensor polarizability of ${}^{87}$Rb

Abstract

We report on the measurement of the contribution of the magnetic-dipole hyperfine interaction to the tensor polarizability of the electronic ground-state in ${}^{87}$Rb. This contribution was isolated by measuring the differential shift of the clock transition frequency in ${}^{87}$Rb atoms that were optically trapped in the focus of an intense CO${}_2$ laser beam. By comparing to previous tensor polarizability measurements in ${}^{87}$Rb, the contribution of the interaction with the nuclear electric-quadrupole moment was isolated as well. Our measurement will enable better estimation of black-body shifts in Rb atomic clocks. The methods reported here are applicable for future spectroscopic studies of atoms and molecules under strong quasi-static fields.

5 pages, 3 figure

References in corpus (5)

• Analysis of dephasing mechanisms in a standing wave dipole trap
• Demonstration of a Dual Alkali Rb/Cs Atomic Fountain Clock
• Precision measurement of light shifts at two off-resonant wavelengths in a single trapped Ba+ ion and determination of atomic dipole matrix elements
• Blackbody radiation shift in 87Rb frequency standard
• Hyperfine-mediated static polarizabilities of monovalent atoms and ions

Cited by in corpus (2)

• Polarizabilities and tune-out wavelengths of the hyperfine ground states of ${}^{87,85}$Rb
• Measuring magnetic fields with magnetic field insensitive transitions