Temperature Dependence of Electric Field Noise above Gold Surfaces
作者： Jaroslaw Labaziewicz , Yufei Ge , David R. Leibrandt , Shannon X. Wang , Ruth Shewmon
DOI: 10.1103/PHYSREVLETT.101.180602
关键词:
摘要: Electric field noise from fluctuating patch potentials is a significant problem for broad range of precision experiments, including trapped ion quantum computation and single spin detection. Recent results demonstrated strong suppression this by cryogenic cooling, suggesting an underlying thermal process. We present measurements characterizing the temperature frequency dependence 7 to 100 K, using ${\mathrm{Sr}}^{+}$ $75\text{ }\text{ }\ensuremath{\mu}\mathrm{m}$ above surface gold plated electrode trap. The amplitude observed have approximate $1/f$ spectrum around 1 MHz, grows rapidly with as ${T}^{\ensuremath{\beta}}$ $\ensuremath{\beta}$ 2 4. data are consistent microfabricated cantilever noncontact friction but do not extrapolate dc neutral atoms or contact potential probes.
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