We present a new method of spin-motion coupling for trapped ions using microwaves and a magnetic field gradient oscillating close to the ions' motional frequency. We demonstrate and characterize this coupling experimentally using a single ion in a surface-electrode trap that incorporates current-carrying electrodes to generate the microwave field and the oscillating magnetic field gradient. Using this method, we perform resolved-sideband cooling of a single motional mode to its ground state.
@article{arxiv.1812.02098,
title = {Trapped-ion spin-motion coupling with microwaves and a near-motional oscillating magnetic field gradient},
author = {R. Srinivas and S. C. Burd and R. T. Sutherland and A. C. Wilson and D. J. Wineland and D. Leibfried and D. T. C. Allcock and D. H. Slichter},
journal= {arXiv preprint arXiv:1812.02098},
year = {2019}
}