Measurement of the tune-out wavelength for 133Cs at 880 nm
Date
2021-11-22
Journal Title
Journal ISSN
Volume Title
Publisher
Physical Review A
Abstract
We perform a measurement of the tune-out wavelength, λ0, between the D1, 62S1/2→62P1/2, and D2, 62S1/2→62P3/2, transitions for 133Cs in the ground hyperfine state (F=3,mF=+3). At λ0, the frequency-dependent scalar polarizability is zero leading to a zero scalar ac Stark shift. We measure the polarizability as a function of wavelength using Kapitza-Dirac scattering of a 133Cs Bose-Einstein condensate in a one-dimensional optical lattice, and determine the tune-out wavelength to be λ0=880.21790(40)stat(8)sys nm. From this measurement we determine the ratio of reduced matrix elements to be ∣∣⟨6P3/2∥d∥6S1/2⟩∣∣2/∣∣⟨6P1/2∥d∥6S1/2⟩∣∣2=1.9808(2). This represents an improvement of a factor of 10 over previous results derived from excited-state lifetime measurements. We use the present measurement as a benchmark test of high-precision theory.
Description
This article was originally published in Physical Review A. The version of record is available at: https://doi.org/10.1103/PhysRevA.104.052813
Keywords
Citation
Ratkata, Apichayaporn, Philip D. Gregory, Andrew D. Innes, Jonas A. Matthies, Lewis A. McArd, Jonathan M. Mortlock, M. S. Safronova, Sarah L. Bromley, and Simon L. Cornish. “Measurement of the Tune-out Wavelength for Cs 133 at 880 Nm.” Physical Review A 104, no. 5 (November 22, 2021): 052813. https://doi.org/10.1103/PhysRevA.104.052813.