Utilization of the superconducting transition for characterizing low-quality-factor superconducting resonators

Tunable Superconducting Split Ring Resonators

Analysis and calibration techniques for superconducting resonators.

A method is proposed and experimentally explored for in-situ calibration of complex transmission data for superconducting microwave resonators. This cryogenic calibration method accounts for the instrumental transmission response between the vector network analyzer reference plane and the device calibration plane. Once calibrated, the observed resonator response is analyzed in detail by two app...

Planar superconducting resonators with internal quality factors above one million

one million A. Megrant, C. Neill, R. Barends, B. Chiaro, Yu Chen, L. Feigl, J. Kelly, Erik Lucero, Matteo Mariantoni, P. J. J. O’Malley, D. Sank, A. Vainsencher, J. Wenner, T. C. White, Y. Yin, J. Zhao, C. J. Palmstrøm, John M. Martinis, and A. N. Cleland Department of Physics, University of California, Santa Barbara, California 93106-9530, USA Department of Materials, University of California,...

Surface-resistance measurements using superconducting stripline resonators.

We present a method to measure the absolute surface resistance of conductive samples at a set of GHz frequencies with superconducting lead stripline resonators at temperatures 1-6 K. The stripline structure can easily be applied for bulk samples and allows direct calculation of the surface resistance without the requirement of additional calibration measurements or sample reference points. We f...

Optomechanical-like coupling between superconducting resonators

J. R. Johansson,1,* G. Johansson,2 and Franco Nori3,4 1iTHES Research Group, RIKEN, Wako-shi, Saitama 351-0198, Japan 2Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-412 96 Göteborg, Sweden 3CEMS, RIKEN, Wako-shi, Saitama 351-0198, Japan 4Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA (Received 4 April 2014; published 18 November ...