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Article overview
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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
; | Date: |
5 Oct 2009 | Abstract: | We study the loss rate for a set of lambda/2 coplanar waveguide resonators at
millikelvin temperatures (20 mK - 900 mK) and different applied powers (3E-19 W
- 1E-12 W). It was found that 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 used in this work. This leads to the assumption that the
nature of these two-level systems is material independent. | Source: | arXiv, 0910.0685 | Services: | Forum | Review | PDF | Favorites |
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