Suppression of Heating Rates in Cryogenic Surface-Electrode Ion Traps

Details Suppression of Heating Rates in Cryogenic Surface-Electrode Ion Traps Suppression of Heating Rates in Cryogenic Surface-Electrode Ion Traps

2007-06-26

arxiv.org/abs/0706.3763v2

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.100.013001

Dense arrays of trapped ions provide one way of scaling up ion trap quantum information processing. However, miniaturization of ion traps is currently limited by sharply increasing motional state decoherence at sub-100 um ion-electrode distances. We characterize heating rates in cryogenically cooled surface-electrode traps, with characteristic sizes in 75 um to 150 um range. Upon cooling to 6 K, the measured rates are suppressed by 7 orders of magnitude, two orders of magnitude below previously published data of similarly sized traps operated at room temperature. The observed noise depends strongly on fabrication process, which suggests further improvements are possible.

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