Insensitivity of the rate of ion motional heating to trap-electrode material over a large temperature range
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PhysRevA.89.012318.pdf
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357.56 KB
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Author(s)
Chiaverini, John
Sage, Jeremy M.
Date Issued
January 2014
Journal
Physical Review A
Publisher
American Physical Society
Citation
Chiaverini, J., and J. M. Sage. “Insensitivity of the Rate of Ion Motional Heating to Trap-Electrode Material over a Large Temperature Range.” Physical Review A 89.1 (2014): n. pag. © 2014 American Physical Society
Version
Final published version
Abstract
We present measurements of trapped-ion motional-state heating rates in niobium and gold surface-electrode ion traps over a range of trap-electrode temperatures from approximately 4 K to room temperature (295 K) in a single apparatus.Using the sideband-ratio technique after resolved-sideband cooling of single ions to the motional ground state, we find low-temperature heating rates more than two orders of magnitude below the room-temperature values and approximately equal to the lowest measured heating rates in similarly sized cryogenic traps. We find similar behavior in the two very different electrode materials, suggesting that the anomalous heating process is dominated by non-material-specific surface contaminants. Through precise control of the temperature of cryopumping surfaces, we also identify conditions under which elastic collisions with the background gas can lead to an apparent steady heating rate, despite rare collisions.
MIT Department
Lincoln Laboratory
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DOI of Published Version
https://doi.org/10.1103/PhysRevA.89.012318
