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Scalable Quantum Logic Spectroscopy by Cui, Kaifeng; Valencia, Jose; Boyce, Kevin T.; Leibrandt, David R.; Hume, David B. is a scholarly article available to read on EtoBox.

What is Scalable Quantum Logic Spectroscopy about?

In quantum logic spectroscopy (QLS), one species of trapped ion is used as a sensor to detect the state of an otherwise inaccessible ion species. This extends precision measurements to a broader class of atomic and molecular systems for applications like atomic clocks and tests of fundamental physics. Here, we develop a new technique based on a Schr\"{o}dinger cat interferometer to address the problem of scaling QLS to larger ion numbers. We demonstrate the basic features of this method using various combinations of $^{25}\text{Mg}^+$ logic ions and $^{27}\text{Al}^+$ spectroscopy ions. We observe higher detection efficiency by increasing the number of $^{25}\text{Mg}^+$ ions. Applied to multiple $^{27}\text{Al}^+$, this method will improve the stability of high-accuracy optical clocks and could enable Heisenberg-limited QLS.

Author

Cui, Kaifeng; Valencia, Jose; Boyce, Kevin T.; Leibrandt, David R.; Hume, David B.

Published

2022

Language

EN