Multi-state interferometric measurement of nonlinear AC Stark shift

Abstract

We demonstrate measurement of quadratic AC Stark shifts between Zeeman sublevels in an ${}^{87}$Rb Bose--Einstein condensate using a multi-state atomic interferometer. The interferometer can detect a quadratic shift without being affected by relatively large state-independent shifts, thereby improving the measurement precision. We measure quadratic shifts in the total spin $F=2$ state due to the light being near-resonant to the D${}_1$ line. The agreement between the measured and theoretical detuning dependences of the quadratic shifts confirms the validity of the measurement. We also present results on the suppression of nonlinear spin evolution using near-resonant dual-color light pulses with opposite quadratic shifts.

7 pages, 6 figures

References in corpus (6)

• Spin squeezing of atomic ensembles via nuclear-electronic spin entanglement
• Quantum Control of the Hyperfine Spin of a Cs Atom Ensemble
• Anisotropic polarizability of erbium atoms
• Anisotropic dependence of tune-out wavelength near Dy 741-nm transition
• Measurement of the dynamic polarizability of Dy atoms near the 626-nm intercombination line
• Observation of bosonic stimulation in light scattering