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arXiv 0812.3380quant-ph
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表面上的电场噪声:离子阱中加热率标度律的模型

Electric field noise above surfaces: a model for heating rate scaling law in ion traps

Romain Dubessy, Thomas Coudreau, Luca Guidoni

摘要:

我们提出了一个模型的标度律的电场噪声谱密度作为距离的函数,$d$,上面的导电表面。我们的分析方法通过引入表面上的电势的相关长度$ζ$来模拟贴片电势。预测的标度律与两种不同类型的实验(冷捕获离子和离子杠杆),跨越至少四个数量级的$d$非常一致。根据该模型,通过适当的材料工程可以大大降低微型离子阱的加热速率。

英文摘要:

We present a model for the scaling laws of the electric field noise spectral density as a function of the distance, $d$, above a conducting surface. Our analytical approach models the patch potentials by introducing a correlation length, $ζ$, of the electric potential on the surface. The predicted scaling laws are in excellent agreement with two different classes of experiments (cold trapped ions and cantilevers), that span at least four orders of magnitude of $d$. According to this model, heating rate in miniature ion traps could be greatly reduced by proper material engineering.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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