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Enhancement of quasiparticle recombination in Ta and Al superconductors by implantation of magnetic and nonmagnetic atoms
R. Barends, S. van Vliet, J. J. A. Baselmans +3
The quasiparticle recombination time in superconducting films, consisting of the standard electron-phonon interaction and a yet to be identified low temperature process, is studied…
Contribution of dielectrics to frequency and noise of NbTiN superconducting resonators
R. Barends, H. L. Hortensius, T. Zijlstra +4
We study NbTiN resonators by measurements of the temperature dependent resonance frequency and frequency noise. Additionally, resonators are studied covered with SiOx dielectric la…
Quasiparticle relaxation in optically excited high-Q superconducting resonators
R. Barends, J. J. A. Baselmans, S. J. C. Yates +3
The quasiparticle relaxation time in superconducting films has been measured as a function of temperature using the response of the complex conductivity to photon flux. For tantalu…