Novel Self-Sustained Modulation in Superconducting Stripline Resonators

We study thermal instability in a driven superconducting NbN resonator integrated with a microbridge. A monochromatic input drive is injected into the resonator and the response is measured as a function of the frequency and amplitude of the drive. Inside a certain zone in the frequency-amplitude pl...

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Bibliographic Details
Published inarXiv.org
Main Authors Segev, Eran, Abdo, Baleegh, Shtempluck, Oleg, Buks, Eyal
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 26.12.2006
Subjects
Amplitudes
Modulation
Niobium nitride
Resonators
Superconductivity
Thermal instability
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Summary:We study thermal instability in a driven superconducting NbN resonator integrated with a microbridge. A monochromatic input drive is injected into the resonator and the response is measured as a function of the frequency and amplitude of the drive. Inside a certain zone in the frequency-amplitude plane the system has no steady state, and consequently self-sustained modulation of the reflected power off the resonator is generated. A theoretical model, according to which the instability originates by a hot spot forming in the microbridge, exhibits a good quantitative agreement with the experimental results.
ISSN:2331-8422
DOI:10.48550/arxiv.0607259