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arXiv · 1905.02388

Quantum logic spectroscopy with ions in thermal motion

D. Kienzler·Y. Wan·S. D. Erickson·J. J. Wu·A. C. Wilson·D. J. Wineland·D. Leibfried
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Abstract

A mixed-species geometric phase gate has been proposed for implementing quantum logic spectroscopy on trapped ions that combines probe and information transfer from the spectroscopy to the logic ion in a single pulse. We experimentally realize this method, show how it can be applied as a technique for identifying transitions in currently intractable atoms or molecules, demonstrate its reduced temperature sensitivity, and observe quantum-enhanced frequency sensitivity when it is applied to multi-ion chains. Potential applications include improved readout of trapped-ion clocks and simplified error syndrome measurements for quantum error correction.

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D. Kienzler, Y. Wan, S. D. Erickson, J. J. Wu, A. C. Wilson, D. J. Wineland, D. Leibfried. 2020-01-07. Quantum logic spectroscopy with ions in thermal motion. https://doi.org/10.1103/physrevx.10.021012

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