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arXiv 0910.0685cond-mat.supr-con
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毫开尔文温度下共面波导谐振器的损耗

Losses in coplanar waveguide resonators at millikelvin temperatures

P. Macha, S. H. W. van der Ploeg, G. Oelsner, E. Il'ichev, H. -G. Meyer, S. Wuensch, M. Siegel

摘要:

本文研究了一组λ/2共面波导谐振器在毫开尔文温度(20 mK -900 mK)和不同外加功率(3E-19 W -1 E-12 W)下的损耗率。在临界功率以下,损耗率变得与功率无关。对于固定的功率,损耗率随温度的降低而显著增加。我们表明,这种行为可以引起周围的电介质材料中的两个级别的系统。有趣的是,对于不同的材料组合,两能级系统的影响具有相同的数量级。这导致了这样的假设,即这些两能级系统的性质是物质独立的。

英文摘要:

We study the loss rate for a set of lambda/2 coplanar waveguide resonators at millikelvin temperatures (20 mK - 900mK) and different applied powers (3E-19 W - 1E-12 W). The loss rate becomes power independent below a critical power. For a fixed power, the loss rate increases significantly with decreasing temperature. We show that this behavior can be caused by two-level systems in the surrounding dielectric materials. Interestingly, the influence of the two-level systems is of the same order of magnitude for the different material combinations. That leads to the assumption that the nature of these two-level systems is material independent.

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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