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arXiv · 1503.08185

A compact design for the Josephson mixer: the lumped element circuit

J. -D. Pillet·E. Flurin·F. Mallet·B. Huard
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Abstract

We present a compact and efficient design in terms of gain, bandwidth and dynamical range for the Josephson mixer, the superconducting circuit performing three-wave mixing at microwave frequencies. In an all lumped-element based circuit with galvanically coupled ports, we demonstrate non degenerate amplification for microwave signals over a bandwidth up to 50 MHz for a power gain of 20 dB. The quantum efficiency of the mixer is shown to be about 70$\%$ and its saturation power reaches $-112$ dBm.

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J. -D. Pillet, E. Flurin, F. Mallet, B. Huard. 2015-06-08. A compact design for the Josephson mixer: the lumped element circuit. https://doi.org/10.1063/1.4922188

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