Reduction of anomalous heating in an in-situ-cleaned ion trap

Details Reduction of anomalous heating in an in-situ-cleaned ion trap Reduction of anomalous heating in an in-situ-cleaned ion trap

2011-12-22

arxiv.org/abs/1112.5419v1

Physics

Quantum Physics

7 pages, 1 figure

Scientific paper

Anomalous heating of trapped atomic ions is a major obstacle to their use as quantum bits in a scalable quantum computer. The physical origin of this heating is not fully understood, but experimental evidence suggests that it is caused by electric-field noise emanating from the surface of the trap electrodes. In this study, we have investigated the role that adsorbates on the electrodes play by identifying contaminant overlayers, developing an in situ argon-ion beam cleaning procedure, and measuring ion heating rates before and after cleaning the trap electrodes' surfaces. We find a reduction of two orders of magnitude in heating rate after cleaning.

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