We realize tunable coupling between two superconducting transmission line resonators. The coupling is mediated by a non-hysteretic rf SQUID acting as a flux-tunable mutual inductance between the resonators. We present a spectroscopic characterization of the device. In particular, we observe couplings g/2π ranging between –320 MHz and 37 MHz. In the case of g 0, the microwave power cross transmission between the two resonators is reduced by almost four orders of magnitude as compared to the case where the coupling is switched on.
CITATION STYLE
Wulschner, F., Goetz, J., Koessel, F. R., Hoffmann, E., Baust, A., Eder, P., … Gross, R. (2016). Tunable coupling of transmission-line microwave resonators mediated by an rf SQUID. EPJ Quantum Technology, 3(1). https://doi.org/10.1140/epjqt/s40507-016-0048-2
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