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Kerr nonlinearity in a superconducting Josephson metamaterial
Univ Grenoble Alpes, CNRS, Grenoble INP, Inst Neel, 25 Rue Martyrs BP 166, F-38042 Grenoble, France..
Univ Grenoble Alpes, Lab Phys & Modelisat Milieux Condenses, 25 Rue Martyrs, F-38042 Grenoble, France.;CNRS, 25 Rue Martyrs, F-38042 Grenoble, France..
KTH, School of Engineering Sciences (SCI), Applied Physics, Nanostructure Physics. Univ Grenoble Alpes, CNRS, Grenoble INP, Inst Neel, 25 Rue Martyrs BP 166, F-38042 Grenoble, France.
Univ Grenoble Alpes, CNRS, Grenoble INP, Inst Neel, 25 Rue Martyrs BP 166, F-38042 Grenoble, France.;Argonne Natl Lab, Inst Mol Engn, Argonne, IL 60439 USA.;Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA..
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2018 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 98, no 9, article id 094516Article in journal (Refereed) Published
Abstract [en]

We present a detailed experimental and theoretical analysis of the dispersion and nonlinear Kerr frequency shifts of plasma modes in a one-dimensional Josephson junction chain containing 500 superconducting quantum interfence devices in the regime of weak nonlinearity. The measured low-power dispersion curve agrees perfectly with the theoretical model if we take into account the Kerr renormalization of the bare frequencies and the long-range nature of the island charge screening by a remote ground plane. We measured the self- and cross-Kerr shifts for the frequencies of the eight lowest modes in the chain. We compare the measured Kerr coefficients with theory and find good agreement.

Place, publisher, year, edition, pages
American Physical Society, 2018. Vol. 98, no 9, article id 094516
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URN: urn:nbn:se:kth:diva-235882DOI: 10.1103/PhysRevB.98.094516ISI: 000444950000003Scopus ID: 2-s2.0-85053846835OAI: oai:DiVA.org:kth-235882DiVA, id: diva2:1254157
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QC 20181008

Available from: 2018-10-08 Created: 2018-10-08 Last updated: 2018-10-08Bibliographically approved

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