Cui, K.
, Valencia, J.
, Boyce, K.
, Clements, E.
, Leibrandt, D.
and Hume, D.
(2022),
Scalable Quantum Logic Spectroscopy, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.129.193603, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933402
(Accessed November 21, 2024)
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Scalable Quantum Logic Spectroscopy
Published
Author(s)
Kaifeng Cui, , , Ethan Clements, David Leibrandt,
Abstract
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 Schrödinger 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-Mg+ logic ions and 27-Al+ spectroscopy ions. We observe higher detection efficiency by increasing the number of 25-Mg+ ions. Applied to multiple 27-Al+, this method will improve the stability of high-accuracy optical clocks and could enable Heisenberg-limited QLS.Citation
Physical Review Letters
Volume
129
Issue
19
Pub Type
Journals
Download Paper
Keywords
quantum information, optical clocks, trapped ions, quantum metrology
Citation
Issues
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Created November 2, 2022, Updated January 8, 2024