Iterative precision measurement of branching ratios applied to 5P States in [superscript 88]Sr[superscript +]
Name
Zhang-2016-Iterative precision measurement of.pdf
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Author(s)
Zhang, Helena Y.
Gutierrez, Michael Steven
Low, Guang Hao
Rines, Rich
Stuart, Jules
Wu, Tailin
Chuang, Isaac
Alternative Title
Iterative precision measurement of branching ratios applied to 5P States in 88Sr+
Date Issued
December 2016
Journal
New Journal of Physics
Publisher
IOP Publishing
Citation
Zhang, Helena, Michael Gutierrez, Guang Hao Low, Richard Rines, Jules Stuart, Tailin Wu, and Isaac Chuang. “Iterative Precision Measurement of Branching Ratios Applied to 5P States in [subscript 88]Sr[superscript +].” New Journal of Physics 18, no. 12 (December 15, 2016): 123021. © 2016 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
Version
Final published version
Abstract
We report and demonstrate a method for measuring the branching ratios of dipole transitions of trapped atomic ions by performing nested sequences of population inversions. This scheme is broadly applicable to species with metastable lambda systems and can be generalized to find the branching of any state to lowest states. It does not use ultrafast pulsed or narrow linewidth lasers and is insensitive to experimental variables such as laser and magnetic field noise as well as ion heating. To demonstrate its effectiveness, we make the most accurate measurements thus far of the branching ratios of both 5P[subscript 1/2] and 5P[subscript 3/2] states in [superscript 88]Sr[superscript +] with sub-1% uncertainties. We measure 17.175(27) for the 5P[subscript 1/2]–5S[subscript 1/2] branching ratio, 15.845(71) for 5P[subscript 3/2]–5S[subscript 1/2], and 0.056 09(21) for 5P[subscript 3/2]–4D[subscript 5/2]. These values represent the first precision measurement for 5P[subscript 3/2]–4D[subscript 5/2], as well as ten- and thirty-fold improvements in precision respectively for 5P[subscript 1/2]–5S[subscript 1/2] and 5P[subscript 3/2]–5S[subscript 1/2] over the best previous experimental values.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1088/1367-2630/aa511d
