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Suppression of low-frequency charge noise in superconducting resonators by surface spin desorption

de Graaf, Sebastian Erik, 1986 (author)
National Physical Laboratory (NPL)
Faoro, L. (author)
Landau Institute for Theoretical Physics
Burnett, Jonathan, 1987 (author)
Chalmers tekniska högskola,Chalmers University of Technology
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Adamyan, Astghik, 1984 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Tzalenchuk, Alexander, 1962 (author)
National Physical Laboratory (NPL),Royal Holloway University of London
Kubatkin, Sergey, 1959 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Lindström, Tobias, 1976 (author)
National Physical Laboratory (NPL)
Danilov, Andrey, 1961 (author)
Chalmers tekniska högskola,Chalmers University of Technology
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 (creator_code:org_t)
2018-03-20
2018
English.
In: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723 .- 2041-1723. ; 9:1
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Noise and decoherence due to spurious two-level systems located at material interfaces are long-standing issues for solid-state quantum devices. Efforts to mitigate the effects of two-level systems have been hampered by a lack of knowledge about their chemical and physical nature. Here, by combining dielectric loss, frequency noise and on-chip electron spin resonance measurements in superconducting resonators, we demonstrate that desorption of surface spins is accompanied by an almost tenfold reduction in the charge-induced frequency noise in the resonators. These measurements provide experimental evid ence that simultaneously reveals the chemical signatures of adsorbed magnetic moments and highlights their role in generating charge noise in solid-state quantum devices.

Subject headings

NATURVETENSKAP  -- Fysik -- Annan fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Other Physics Topics (hsv//eng)
TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

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