Compatibility of Trapped Ions and Dielectrics at Cryogenic Temperatures
Abstract
We study the impact of an unshielded dielectric-here, a bare optical fiber-on a ^{40}Ca^{+} ion held several hundred microns away in a cryogenic surface electrode trap. We observe distance-dependent stray electric fields of up to a few kV/m due to the dielectric, which drift on average less than 10% per month and can be fully compensated with reasonable voltages on the trap electrodes. We observe ion motional heating rates attributable to the dielectric of ≈30 quanta per second at an ion-fiber distance of 215(4) μm and ≈1.5 MHz motional frequency. These results demonstrate the viability of using unshielded, trap-integrated dielectric objects such as miniature optical cavities or other optical elements in cryogenic surface electrode ion traps.
Fields of Study & Subjects
Mass Spectrometry Techniques and Applications
Publication details
- Journal / source
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Volume
- 136
- Issue
- 9
- Pages
- 093204–093204
- Publication date
- 29 January 2026
- Language
- EN