Quantum Logic Spectroscopy with Ions in Thermal Motion Article Swipe

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Spectroscopy Ion Sensitivity (control systems) Quantum Quantum logic Physics Work (physics) Quantum computer Computer science Atomic physics Materials science Quantum mechanics Electronic engineering Engineering

Daniel Kienzler , Yong Wan , Stephen D. Erickson , Jenny J. Wu , A. C. Wilson , D. J. Wineland , D. Leibfried ·

YOU? · · 2020 · Open Access · · DOI: https://doi.org/10.1103/physrevx.10.021012 · OA: W3017330378

A mixed-species geometric phase gate has been proposed for implementing quantum logic spectroscopy on trapped ions, which 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.