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Microwave ac Zeeman Force for Ultracold Atoms

Fancher, C. T.
; 
Pyle, A. J.
; 
Rotunno, A. P.
; 
Aubin, Seth
Abstract
We measure the ac Zeeman force on an ultracold gas of 87Rb due to a microwave magnetic field targeted to the 6.8 GHz hyperfine splitting of these atoms. An atom chip produces a microwave near field with a strong amplitude gradient, and we observe a force over three times the strength of gravity. Our measurements are consistent with a simple two-level theory for the ac Zeeman effect and demonstrate its resonant, bipolar, and spin-dependent nature. We observe that the dressed-atom eigenstates gradually mix over time and have mapped out this behavior as a function of magnetic field and detuning. We demonstrate the practical spin selectivity of the force by pushing or pulling a specific spin state while leaving other spin states unmoved.
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2018-04-01
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Physics
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PhysRevA.97.043430.pdf
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Physics
DOI
https://doi.org/10.1103/PhysRevA.97.043430
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https://scholarworks.wm.edu/handle/internal/1295
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