Quantum Logic Spectroscopy with Ions in Thermal Motion
Daniel Kienzler, Yong Wan, Stephen Erickson, Jenny Wu, Andrew C. Wilson, David J. Wineland, Dietrich Leibfried
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 applied to multi-ion chains. Potential applications include improved readout of trapped-ion clocks and simplified error syndrome measurements for quantum error correction.
, Wan, Y.
, Erickson, S.
, Wu, J.
, Wilson, A.
, Wineland, D.
and Leibfried, D.
Quantum Logic Spectroscopy with Ions in Thermal Motion, Physical Review X
(Accessed October 18, 2021)