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Normal modes of superconducting phase oscillations in Josephson junction chains

Abstract : The subject of thesis is a theorerical study of normal modes of plasma oscillations in superconducting Josephson junction chains. The properties of these normal modes can be controlled by choosing an appropriate spatial modulation of the junction parameters along the chain and/or an appropriate coupling to the external environment. The theoretical work at LPMMC is performed in a close collaboration with the experimental Quantum Coherence group at Néel Institute. The specific problems studied in this thesis are : detailed modeling of the normal mode coupling to the environment for probing them in a microwave transmission experiment, intrinsic dissipation of plasma oscillations due to the presence of non-equilibrium quasi-particles, optimization of the spatial structure of the Josephson junction chain for its use as a super-inductance.
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https://tel.archives-ouvertes.fr/tel-02052403
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Submitted on : Thursday, February 28, 2019 - 2:19:07 PM
Last modification on : Wednesday, October 14, 2020 - 4:19:05 AM
Long-term archiving on: : Wednesday, May 29, 2019 - 6:45:55 PM

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  • HAL Id : tel-02052403, version 1

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van Duy Nguyen. Normal modes of superconducting phase oscillations in Josephson junction chains. Quantum Physics [quant-ph]. Université Grenoble Alpes, 2018. English. ⟨NNT : 2018GREAY050⟩. ⟨tel-02052403⟩

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