Kerr coefficients of plasma resonances in Josephson junction chains
| Autor: | Thomas Weißl, Cécile Naud, Frank W. J. Hekking, Etienne Dumur, Wiebke Guichard, Iulian Matei, B. Küng, Olivier Buisson, A. K. Feofanov |
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| Přispěvatelé: | Circuits électroniques quantiques Alpes (QuantECA), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Centre d'économie de la Sorbonne (CES), Université Paris 1 Panthéon-Sorbonne (UP1)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique et modélisation des milieux condensés (LPM2C), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), European Project: 306731,EC:FP7:ERC,ERC-2012-StG_20111012,FREQUJOC(2013), Circuits électroniques quantiques Alpes (NEEL - QuantECA), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS) |
| Předmět: |
Physics
Josephson effect [PHYS]Physics [physics] Kerr effect Photon Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Condensed Matter - Superconductivity FOS: Physical sciences Perturbation (astronomy) Physics::Optics Plasma Condensed Matter Physics Electronic Optical and Magnetic Materials Superconductivity (cond-mat.supr-con) symbols.namesake General Relativity and Quantum Cosmology Mesoscale and Nanoscale Physics (cond-mat.mes-hall) symbols Atomic physics Hamiltonian (quantum mechanics) Phase conjugation Linear circuit |
| Zdroj: | Physical Review B: Condensed Matter and Materials Physics (1998-2015) Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2015, 92 (10), pp.104508. ⟨10.1103/PhysRevB.92.104508⟩ Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2015, 92 (10), pp.104508. ⟨10.1103/PhysRevB.92.104508⟩ |
| ISSN: | 1098-0121 1550-235X |
| DOI: | 10.1103/PhysRevB.92.104508⟩ |
| Popis: | We present an experimental and theoretical analysis of the self- and cross-Kerr effect of extended plasma resonances in Josephson junction chains. We calculate the Kerr coefficients by deriving and diagonalizing the Hamiltonian of a linear circuit model for the chain and then adding the Josephson non-linearity as a perturbation. The calculated Kerr-coefficients are compared with the measurement data of a chain of 200 junctions. The Kerr effect manifests itself as a frequency shift that depends linearly on the number of photons in a resonant mode. By changing the input power on a low signal level, we are able to measure this shift. The photon number is calibrated using the self-Kerr shift calculated from the sample parameters. We then compare the measured cross-Kerr shift with the theoretical prediction, using the calibrated photon number. 10 pages, 9 figures |
| Databáze: | OpenAIRE |
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